WorldWideScience

Sample records for res ft tuition

  1. The Tuition Debate.

    Science.gov (United States)

    Weber, Arnold R.

    1990-01-01

    The trend of tuition increases is excessive in terms of both economic standards and the special mission and characteristics of higher education. It is clouding the current state of higher education. Although there are sound reasons for tuition increases, the current approach to setting tuition should be altered and moderated. (MSE)

  2. Losing Sleep over Tuition

    Science.gov (United States)

    Fogg, Piper

    2009-01-01

    With two children already in college and three more in the wings, the Nwanguma family knows about sacrifice. The annual tuition bill for Prince George's Community College typically comes to between $3,500 and $4,000 for the oldest son, Chuka. To afford it, Chuma Nwanguma, a Nigerian immigrant, often works overtime in addition to his regular night…

  3. Low Tuition, Progressive Taxation.

    Science.gov (United States)

    Mingle, James R.

    1992-01-01

    The strategy for financing public higher education of using high tuition and student aid assumes, erroneously, that targeting subsidies directly to the needy makes a more equitable system, that the public will support the high-aid end of the equation, and that current and future students can repay debt. (MSE)

  4. A Model of College Tuition Maximization

    Science.gov (United States)

    Bosshardt, Donald I.; Lichtenstein, Larry; Zaporowski, Mark P.

    2009-01-01

    This paper develops a series of models for optimal tuition pricing for private colleges and universities. The university is assumed to be a profit maximizing, price discriminating monopolist. The enrollment decision of student's is stochastic in nature. The university offers an effective tuition rate, comprised of stipulated tuition less financial…

  5. Tuition Reciprocity in the United States

    Science.gov (United States)

    Stewart, Gregory; Wright, Dianne Brown; Kennedy, Angelica

    2008-01-01

    Reciprocity agreements are contracts between two or more parties whereby students pay reduced tuition rates. The rate of reduction is determined by the parameters set forth in each individual state's agreement but may range from a modest reduction in fees to a waiver of full non-resident tuition. In addition to providing tuition relief,…

  6. Taxes, Tuition Fees and Education for Pleasure

    DEFF Research Database (Denmark)

    Malchow-Møller, Nikolaj; Nielsen, Søren Bo; Skaksen, Jan Rose

    2011-01-01

    are unconstrained, the optimal tax/fee system involves regressive income taxes and high tuition fees. A progressive labor income tax system may, on the other hand, be a second-best response to politically constrained, low tuition fees. Finally, the existence of individuals with different abilities will also move...... the optimal income tax system toward progressivity.......The fact that education provides both a productive and a consumptive (nonproductive) return has important and, in some cases, dramatic implications for optimal taxes and tuition fees. Using a simple model, we show that when the consumption share in education is endogenous and tuition fees...

  7. Adam Smith, Religion, and Tuition Tax Credits.

    Science.gov (United States)

    Alexander, Kern

    1983-01-01

    Examines tuition tax credit programs in framework of Adam Smith's ideas on the economic impact of established churches. Finds that tuition tax credits would amount to state expenditures to relieve the financial burden of parochial school parents and would allow churches to invest commercially to maintain their charitable functions. (JW)

  8. Student Tuition Charges: Comparisons, Options, and Implications and An Appendix to Student Tuition Charges: Comparisons, Options, and Implications.

    Science.gov (United States)

    Diaz, Porfirio R.

    National and state comparisons of tuition and fee charges, as well as various policy options presented to the New Mexico Commission on Higher Education, are provided. An introduction to tuition and fee calculation is followed by definitions of tuition, required student fees, and student residency status. A study of tuition and fees at New Mexico…

  9. Worldwide Tuition Increases Send Students into the Streets.

    Science.gov (United States)

    Woodard, Colin

    2000-01-01

    Examines the global trend towards increased tuition and fees in public institutions of higher education. Despite histories of free or very low tuition and student protests, most observers see higher tuition and fees (and financial aid programs for needy students) as invitable. Notes increased demand, enrollment surges, and collapsing systems of…

  10. 29 CFR 1949.1 - Policy regarding tuition fees.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Policy regarding tuition fees. 1949.1 Section 1949.1 Labor... Institute § 1949.1 Policy regarding tuition fees. (a) The OSHA Training Institute shall charge tuition fees for all private sector students attending Institute courses. (b) The following private sector students...

  11. Financial Condition and Tuition in Private Nonprofit Baccalaureate Higher Education

    Science.gov (United States)

    Peruso, Dominick F., Jr.

    2012-01-01

    The rate of tuition inflation at U.S. colleges and universities is alarming and threatens both access and choice. Private nonprofit baccalaureate colleges often possess the highest tuition rates but routinely face financial challenges. This study was designed to better understand the relationship between tuition and financial condition for the…

  12. The Effect of Tuition Increases on Business Student Decisions

    Science.gov (United States)

    Godek, John; Murray, Kyle B.; Karns, Gary

    2015-01-01

    Tuition increases have become all too common as states have cut spending to public institutions and private schools face declining enrollments. As such, understanding the effects of various methods of framing tuition increases is an important, but infrequently researched topic. The authors examine different ways to frame tuition increases…

  13. Liquidation of wastes as tuition topic

    International Nuclear Information System (INIS)

    Kolar, K.; Hysplerova, L.; Holy, I.

    1999-01-01

    Authors deal in this paper with tuition project aimed on the liquidation of wastes. Structure of project includes next thematic complex: classification of inorganic and organic wastes; characterization of wastes and proposition for their liquidation (detoxication) or recyclation; chemical (physical) nature of neutralize of inorganic and organic wastes; general method of neutralize of wastes; analytical methods necessary for control of course of neutralize (detoxication) of wastes. This tuition project allows for students to know manipulation with wastes and methods of their liquidation from ecologic point of view

  14. Student Response to Tuition Increase by Academic Majors: Empirical Grounds for a Cost-Related Tuition Policy

    Science.gov (United States)

    Shin, Jung Cheol; Milton, Sande

    2008-01-01

    This study explored the responses of students in different academic majors to tuition increase, with a particular focus on the relationship between tuition increase, and future earnings and college expenditures. We analyzed effects of tuition increase on enrollment in six academic majors--Engineering, Physics, Biology, Mathematics, Business, and…

  15. The Waldorf Tuition and Grant Reduction Experiment.

    Science.gov (United States)

    Hamm, William E.

    1995-01-01

    Counter to national trends at private colleges, Waldorf College (Iowa) found it could increase enrollment by reducing tuition and institution-based student aid. The context for implementing this policy, short- and long-term results of the decisions, lessons learned, and some more-recent initiatives are reviewed. (MSE)

  16. Tuition fees and sunk-cost effects

    NARCIS (Netherlands)

    Ketel, N.; Linde, J.; Oosterbeek, H.; van der Klaauw, B.

    2016-01-01

    This article reports on a field experiment testing for sunk-cost effects in an education setting. Students signing up for extra-curricular tutorial sessions randomly received a discount on the tuition fee. The sunk-cost effect predicts that students who pay more will attend more tutorial sessions,

  17. What's Happened to College Tuition and Why.

    Science.gov (United States)

    Greenberg, Marvin W.

    1988-01-01

    Attention focused on increasing college tuition and federal concerns about college cost containment may be obscuring other issues in the rising cost of college education, including accumulated 1970s deficits, faculty salaries, changes in the enrollment mix, the needs for automation and accountability, and instructional facility and equipment…

  18. Tuition Fees, as User Prices, and Private Incentives

    OpenAIRE

    Economides, George; Philippopoulos, Apostolis; Sakkas, Stelios

    2016-01-01

    This paper studies the aggregate and distributional implications of introducing tuition fees for public education services into a tax system with income and consumption taxes. The setup is a neoclassical growth model where agents differ in capital holdings. We show that the introduction of tuition fees (a) improves individual incentives to work and/or save and (b) can be both efficient and equitable. The focus is on the role of tuition fees as an extra price and how this affects private incen...

  19. Anatomy of a Tuition Freeze: The Case of Ontario

    Science.gov (United States)

    Rexe, Deanna

    2015-01-01

    Using two conceptual frameworks from political science--Kingdon's (2003) multiple streams model and the advocacy coalition framework (Sabatier & Jenkins-Smith, 1993)--this case study examines the detailed history of a major tuition policy change in Ontario in 2004: a tuition freeze. The paper explores the social, political, and economic…

  20. 2013-14 Tuition and Fee Rates: A National Comparison

    Science.gov (United States)

    Webster, Marc

    2014-01-01

    This is the forty-third report prepared in Washington providing tuition and fee data for flagship institutions, comprehensive institutions, and community colleges. Tuition and fee rates for academic year 2013-14 were collected by staff from the Connecticut Office of Higher Education, who developed an online tool to collect these data from the 50…

  1. Nonresident Tuition and Fees at SUNY. Rates, Policies, and Consequences

    Science.gov (United States)

    Abbey, Craig W.; Armour-Garb, Allison

    2010-01-01

    To inform the discussion of out-of-state tuition, SUNY officials asked the Nelson A. Rockefeller Institute of Government to conduct a study that addresses three questions. First, how do SUNY's undergraduate nonresident tuition and fees compare to those charged by comparable higher education institutions? Second, what is known about the effects of…

  2. Colleges Undermine Their Value when They Put Tuition "On Sale"

    Science.gov (United States)

    Blumenstyk, Goldie

    2009-01-01

    Drexel University is offering laid-off workers a 50-percent discount on tuition at its new graduate campus in California. Davis & Elkins College reduced its price by nearly $15,000 for residents from its home county and six surrounding ones to match the tuition of the state's flagship West Virginia University. And Southern Illinois University at…

  3. Tuition reimbursement for special education students.

    Science.gov (United States)

    Zirkel, P A

    1997-01-01

    The spring 1996 issue of The Future of Children on special education reviewed the legislative and litigation history of the Individuals with Disabilities Education Act (IDEA). This Revisiting article examines the impact of the two U.S. Supreme Court cases setting forth school districts' responsibility to reimburse parents of students with disabilities for private school tuition under certain circumstances. An extensive examination of published cases reveals that the number of cases litigated has increased but that the courts are no more likely to decide in favor of parents than they were before the Supreme Court rulings.

  4. Fusion technology (FT)

    International Nuclear Information System (INIS)

    1978-01-01

    The annual report of tha fusion technology (FT) working group discusses the projects carried out by the participating institutes in the fields of 1) fuel injection and plasma heating, 2) magnetic field technology, and 3) systems investigations. (HK) [de

  5. A Study of the Tuition of Middle Schools in Prwear Tokyo Prefecture

    OpenAIRE

    Karasuda, Naoya

    2002-01-01

    The purpose of this paper is to clarifying the tuition in middle schools at the prewar Tokyo prefecture. The tuition differed between the public schools and the private schools. In the 1890s, most expenses required for management of middle schools was provided with tuition in both private amd public schools. At this time, the tuition of public schools was higher than the private schools. After 1900 tuition of public schools became cheaper than private schools. As expenses of public schools, i...

  6. WHAT ARE THEY BUYING IN PRIVATE TUITION? MICRO-LEVEL PERSPECTIVE ON THE PRACTICE OF PRIVATE TUITION BY GRADE 9 STUDENTS IN KALE TOWNSHIP, MYANMAR

    OpenAIRE

    Kam Tung Tuang Suante

    2017-01-01

    Private tuition is the practice of academic teaching and learning from outside of the school with a fee but a few of studies acknowledged what private tuition provides to the receivers beyond the teaching of academic subjects. This study explored the intensity and nature of private tuition through 1119 Grade 9 students’ survey reports and 18 interviewees’ responses. The study revealed the common practice of private tuition in Myanmar and 69.5% of the participants are in private boarding tuiti...

  7. Tracking the Discount: Tuition Discount Rates, Net Tuition Revenue, and Efforts to Inform Institutional Practices. Professional File. Article 133, Fall 2013

    Science.gov (United States)

    Davis, Natalie Pullaro; Redd, Kenneth E.

    2013-01-01

    This article uses findings from the 2012 Tuition Discounting Study (TDS) conducted by the National Association of College and University Business Officers (NACUBO) to provide a framework for institutional researchers to develop and adapt their own custom tuition discounting definitions and formulas. Under tuition discounting, colleges and…

  8. In medias res

    DEFF Research Database (Denmark)

    Foote, Jonathan

    2017-01-01

    nor does he begin the Trojan War ab ovo (with the egg) but always he hurries to the action and snatches the listener in medias res (into the middle of things)      Horace, Ars Poetica 145–147 Good epic poets do not commence their tale from the beginning—ab ovo (with the egg)—as Horace states......, but rather descend in medias res (into the middle of things), a reference to the Illiad opening already many years into the Trojan War. Perhaps this sentiment of plunging into the middle of action was felt by researchers in 1976 when, upon the walls of the San Lorenzo New Sacristy in Florence, they uncovered...

  9. Tuition Elasticity of the Demand for Higher Education among Current Students: A Pricing Model.

    Science.gov (United States)

    Bryan, Glenn A.; Whipple, Thomas W.

    1995-01-01

    A pricing model is offered, based on retention of current students, that colleges can use to determine appropriate tuition. A computer-based model that quantifies the relationship between tuition elasticity and projected net return to the college was developed and applied to determine an appropriate tuition rate for a small, private liberal arts…

  10. Tuition and Living Accommodation Costs at Canadian Universities, 1978-79 and 1979-80.

    Science.gov (United States)

    Dulac, Claude

    Tuition and living accommodation costs for students at most Canadian universities are summarized in this publication from Statistics Canada. Extensive data tables include information on accommodation costs for university-operated residences and housing and tuition fees. The range of tuition fees at the undergraduate level reflects a fee structure…

  11. Pricing and University Autonomy: Tuition Deregulation in Texas

    Directory of Open Access Journals (Sweden)

    Jeongeun Kim

    2016-04-01

    Full Text Available This paper investigates changes in tuition policies in the wake of tuition deregulation in Texas, which in 2003 transferred tuition-setting authority from the state legislature to institutions. We find that price increases accelerated, particularly at the most selective institutions. Institutions also began differentiating price by undergraduate program, raising relative prices for the most costly and lucrative majors, including engineering, business, nursing, and architecture. Price increases were particularly large for institutions with the highest initial costs and for programs with a high earnings premium within institutions, though lower for institutions with more low-income students. These distinctions suggest that public postsecondary institutions respond to microeconomic incentives when given greater autonomy to set price, and take some measures to alleviate impacts on low-income students. The Texas experience suggests that decentralized price-setting generates greater price differentiation within the public higher education system, both across and within institutions.

  12. What goes around, comes around: a history of medical tuition*

    Science.gov (United States)

    Duffin, Jacalyn

    2001-01-01

    IN THIS ARTICLE THE ACTUAL AND RELATIVE COSTS OF TUITION AT 3 Ontario medical schools are traced over the past 150 years. In addition, the factors that led to Ontario's nearly 4-decade experiment in private medical education (and to its eventual demise) are presented. In relative terms, tuition was stable for over a century, then declined (after 1960) as government support rose. Access to medical training for students from middle-income families may also have improved steadily until the late 1980s. Because there is no shortage of people wanting to become doctors, there seems to be no limit to the price that could be set for a medical education. The recent hikes in tuition have outstripped inflation and may be reducing accessibility to restrictive levels, similar to those that prevailed in the 19th century. The author invites readers to question current trends. PMID:11202668

  13. What goes around, comes around: a history of medical tuition.

    Science.gov (United States)

    Duffin, J

    2001-01-09

    In this article the actual and relative costs of tuition at 3 Ontario medical schools are traced over the past 150 years. In addition, the factors that led to Ontario's nearly 4-decade experiment in private medical education (and to its eventual demise) are presented. In relative terms, tuition was stable for over a century, then declined (after 1960) as government support rose. Access to medical training for students from middle-income families may also have improved steadily until the late 1980s. Because there is no shortage of people wanting to become doctors, there seems to be no limit to the price that could be set for a medical education. The recent hikes in tuition have outstripped inflation and may be reducing accessibility to restrictive levels, similar to those that prevailed in the 19th century. The author invites readers to question current trends.

  14. Variability in United States Allopathic Medical School Tuition.

    Science.gov (United States)

    Gil, Joseph A; Park, Sarah H; Daniels, Alan H

    2015-11-01

    Over the course of the last generation, the cost of medical school attendance and medical student debt has increased drastically. Medical student debt has been reported as high as $350,000, and the Association of American Medical Colleges (AAMC) reports that medical school tuition continues to increase annually. The increasing cost of medical education and associated financial burden is now beginning to deter potential applicants from pursuing a career in medicine. In this study we aimed to assess medical school tuition across the US. We hypothesized that the cost of medical school attendance is variable across all regions of the US, and as a result, the financial burden on medical students is inconsistent. All 123 allopathic medical schools accredited by the AAMC were assessed in this investigation. In-state and out-of-state tuitions for the year 2016 were obtained from U.S. News and World Report. Additionally, medical school size was collected. Regions were defined according to the US Census Bureau definition, with the US being divided into 4 regions: Northeast, Midwest, South, and West. There was no difference in average medical school size among the 4 regions (P > .05). Average in-state tuition was $38,291.56 ± $9801.38 (95% confidence interval [CI], $34,658.07-$41,513.46) in the Midwest, $45,923.04 ± $9178.87 (95% CI, $42,566.28-$49,216.78) in the Northeast, $32,287.78 ± $12,277.53 (95% CI, $28,581.90-$35,378.68) in the South, and $37,745.40 ± $11,414.37 (95% CI, $30,063.28-$40,458.99) in the West. In-state tuition in the South was significantly lower than in the Northeast, West, and Midwest (P tuition in the Northeast was significantly higher than in the South, West, and Midwest (P tuition is $54,104.04 ± $8227.65 (95% CI, $51,207.6-$57,000.39) in the Midwest, $53,180.10 ± $3963.71 (95% CI, $51,761.71-$54,598.50) in the Northeast, $48,191.86 ± $12,578.13 (95% CI, $44,595.84-$51,787.89) in the South, and $52,920.47 ± $7400.83 (95% CI, $49

  15. Res Publica aps / Erkki Bahovski

    Index Scriptorium Estoniae

    Bahovski, Erkki, 1970-

    2003-01-01

    Autori sõnul tekitavad tänavatel ülesseatud postrid, kus peaminister Juhan Parts kutsub üles ütlema "jah" Euroopa Liidule, kummastust, sest ehkki on tegemist Res Publica kampaaniaga, on tavainimesel raske vahet teha valitsuse justkui neutraalse referendumikampaania ja Res Publica "jah"-kampaania vahel

  16. Lõhe Res Publicas / Eve Heinla

    Index Scriptorium Estoniae

    Heinla, Eve, 1966-

    2005-01-01

    Tallinna linnapea Tõnis Palts on vastu Tallinna volikogu Res Publica fraktsiooni esimehe Toomas Tautsi abikaasa Kristina Tautsi tööleasumisele Lääne-Tallinna keskhaigla haldusjuhina. T. Paltsi kirjast Res Publica Tallinna piirkonna juhatusele. Lisa: Kuidas lahvatas pealinna võimutüli. Kommenteerivad: Maret Maripuu, Tõnis Palts, Vladimir Maslov

  17. A European Res publica

    Directory of Open Access Journals (Sweden)

    Ola Zetterquist

    2011-05-01

    Full Text Available The article analyses the fundamental constitutional enigma of the European Union (EU, namely whether the EU can be considered as a (from its Member States separate and independent constitutional legal order. The EU is often referred to as a legal order sui generis, i.e. of a unique character that defies traditional definitions. More specifically, the notion of an independent and separate EU is at odds with the idea of the sovereign state. The notion of the EU as a legal order sui generis is too much influenced by the models of the sovereign state and sovereignty (in the vein of Thomas Hobbes. The key component in the Hobbesian idea of sovereignty is freedom as non-interference. A sovereign state is consequently a state that is free from, i.e. not interfered with by, external actors like, for example, the EU. Put differently, either the EU is sovereign or the Member States are sovereign. By shifting the perspective to a neo-Roman republican understanding of freedom as non-domination the constitutional picture of the EU will become more nuanced. Res publica is best understood as what citizens hold in common and above their narrow self-interest. According to a republican notion of the constitution the purpose of the law is to eliminate the possibility of arbitrary domination. For that reason, not all interference is to be considered as a restriction of freedom but only those restrictions that cannot be justified according to the res publica. Viewed through the republican prism it can be argued that the EU represents an important advancement in securing freedom as non-domination without implying that the EU must become a state. The fundamental enigma can thus be rephrased as a clash between two diverging concepts of freedom. Whereas the EU will always be at odds with the idea of sovereignty (however framed it will be much easier to reconcile with the republican ideal. DOWNLOAD THIS PAPER FROM SSRN: http://ssrn.com/abstract=1837332

  18. Segregating Schools: The Foreseeable Consequences of Tuition Tax Credits.

    Science.gov (United States)

    Yale Law Journal, 1979

    1979-01-01

    Argues that the effect of a proposed tuition tax credit is school segregation, creating serious constitutional objections under the due process clause. A voucher system would avoid these constitutional objections. Available from the Yale Law Journal, 401A Yale Station, New Haven, CT 06520. (Author/IRT)

  19. Global Tuition Pricing: An In-Depth Analysis

    Science.gov (United States)

    Cupp, Jason W.

    2012-01-01

    This study was conducted to determine if there is a relationship between select pricing schemes used throughout the world and positive social outcomes. The rising costs of college tuition and escalating student debt has raised the concern about how students should pay for financing their education and whether the current system is the most…

  20. Internationalisation as Marketisation? Tuition Fees for International Students in Finland

    Science.gov (United States)

    Kauko, Jaakko; Medvedeva, Anna

    2016-01-01

    Having been on the agenda in Finnish policy-making for a decade, tuition fees for students outside the European Union and the European Economic Area became reality in the beginning of 2016. Drawing on institutional theory the current article tracks this development through the analysis of documents and interviews on different levels. The…

  1. Fixing the Net Tuition Revenue Dilemma: The Dickinson College Story

    Science.gov (United States)

    Massa, Robert J.; Parker, Annette S.

    2007-01-01

    This chapter describes how Dickinson College, guided by a strategic plan, addressed its net tuition revenue problem through effective decision support, marketing and branding approaches, and pricing and financial aid strategies. The college's strategic plan guides allocation of resources toward fulfilling the college's purpose of providing an…

  2. Tuition and Fees in Public Higher Education in the West, 2012-2013. Detailed Tuition and Fees Tables

    Science.gov (United States)

    Western Interstate Commission for Higher Education, 2012

    2012-01-01

    This annual report updates the tuition and fee prices published by all of the public higher education institutions in the Western Interstate Commission for Higher Education (WICHE) member states. It is the product of an annual survey administered to the State Higher Education Executive Officers (SHEEO) offices in each state, with a couple of…

  3. Res Publica objedinjajetsja s Sojuzom Otetshestva

    Index Scriptorium Estoniae

    2006-01-01

    Res Publica ja Isamaaliidu liitumisel tekib uus erakond - Eesti Eest!. Ida-Viru Isamaaliidu ja Res Publica esimeeste Hans Pindre, Vladislav Ponjatovski ning Narva Res Publica endise liidri Nikolai Golubevi arvamused

  4. Hypoglycemic depression of RES function.

    Science.gov (United States)

    Buchanan, B J; Filkins, J P

    1976-07-01

    The intravascular removal rates of colloidal carbon and of biologically active endotoxin by the reticuloendothelial system (RES) were evaluated as a function of blood-glucose levels. There was a significant negative correlation of carbon clearance half time on blood glucose in both saline-treated and insulin-treated rats. Insulin hypoglycemia depressed RES carbon clearance with the maximal effect occurring at blood glucose values below 30 mg/dl. Insulin hypoglycemia also severely impaired the intravascular removal of endotoxin as evaluated by lethality bioassay in lead-sensitized rats. It is concluded that blood glucose may modulate RES phagocytic function and that the hypoglycemia of endotoxin shock may augment the shock state due to impairment of RES host defense clearance functions.

  5. Mother Tongue Tuition in Sweden - Curriculum Analysis and Classroom Experience

    Directory of Open Access Journals (Sweden)

    Anne REATH WARREN

    2013-10-01

    Full Text Available The model of Mother Tongue Tuition (MTT which has developed in Sweden since the 1970’s offers speakers of languages other than Swedish the opportunity to request tuition in their mother tongue, from kindergarten through to year 12. It is unique among the major immigrant-receiving countries of the world yet little is known about MTT and its syllabus outside of its Nordic context. This article examines the syllabus for MTT from two perspectives; firstly using the framework of Constructive Alignment, secondly from the perspective of what is hidden. The intended syllabus is revealed as well-aligned, but the hidden curriculum impedes successful enactment in many contexts. Examples from case studies in a larger on-going research project offer an alternate approach to syllabus implementation when the negative effects of the hidden curriculum are challenged. While highly context-specific, this model may represent a step in the right direction for implementation of the syllabus.

  6. Res Publica v respublike / Roman Gornev

    Index Scriptorium Estoniae

    Gornev, Roman

    2002-01-01

    Järg 29. november nr. 48 lk. 7. Res Publica - uue poliitika partei. Res Publica Ida-Virumaal, partei juhtfiguurid, Res Publica Kohtla-Järvel. Koalitsioonileping Keskerakonnaga viis konfliktini partei juhtkonnaga. Kohtla-Järve Res Publica kohaliku organisatsiooni konflikti partei juhtkonnaga kommenteerib Hants Hint

  7. Res Publica kogub uut hoogu / Andres Jalak

    Index Scriptorium Estoniae

    Jalak, Andres, 1953-

    2005-01-01

    Kommenteerides Res Publica senise esimehe ja endise peaministri Juhan Partsi ning uueks esimeheks valitud Taavi Veskimäe kõnet Res Publica üldkogul, väljendab Res Publica fraktsiooni aseesimees usku, et Res Publica juhtimisel suudetakse 2007. aasta parlamendivalimistel taastada tulevikku suunatud mõtlemisega valitsus

  8. Price Elasticity of Per-Credit-Hour Tuition Charges and the Effects on Four-Year Graduation Rates.

    Science.gov (United States)

    DeMoranville, Carol W.; O'Donnell, Paula Bogott

    2001-01-01

    Examined whether changing tuition rates to a sliding scale based on the number of credit hours taken will increase 4-year graduation rates. Found that a sliding tuition rate scale does not increase 4-year graduation rates. (EV)

  9. BioMagResBank.

    NARCIS (Netherlands)

    Ulrich, E.L.; Akutsu, H.; Doreleijers, J.; Harano, Y.; Ioannidis, Y.E.; Lin, J.; Livny, M.; Mading, S.; Maziuk, D.; Miller, Z.; Nakatani, E.; Schulte, C.F.; Tolmie, D.E.; Wenger, R.K.; Yao, H.; Markley, J.L.

    2008-01-01

    The BioMagResBank (BMRB: www.bmrb.wisc.edu) is a repository for experimental and derived data gathered from nuclear magnetic resonance (NMR) spectroscopic studies of biological molecules. BMRB is a partner in the Worldwide Protein Data Bank (wwPDB). The BMRB archive consists of four main data

  10. Resúmenes Conferencias Magistrales

    Directory of Open Access Journals (Sweden)

    Editor Gabriel Vargas Arana

    2015-12-01

    Full Text Available En este artículo se pueden encontrar los resúmenes de las conferencias magistrales del III Congreso Latinoamericano de Plantas Medicinales, desarrollado del 12 al 14 de agosto de 2015 en la ciudad de Iquitos, Perú.

  11. Resúmenes Presentaciones Orales

    Directory of Open Access Journals (Sweden)

    Editor Gabriel Vargas Arana

    2015-12-01

    Full Text Available En este artículo se pueden encontrar los resúmenes de las presentaciones orales del III Congreso Latinoamericano de Plantas Medicinales, desarrollado del 12 al 14 de agosto de 2015 en la ciudad de Iquitos, Perú.

  12. RES: Regularized Stochastic BFGS Algorithm

    Science.gov (United States)

    Mokhtari, Aryan; Ribeiro, Alejandro

    2014-12-01

    RES, a regularized stochastic version of the Broyden-Fletcher-Goldfarb-Shanno (BFGS) quasi-Newton method is proposed to solve convex optimization problems with stochastic objectives. The use of stochastic gradient descent algorithms is widespread, but the number of iterations required to approximate optimal arguments can be prohibitive in high dimensional problems. Application of second order methods, on the other hand, is impracticable because computation of objective function Hessian inverses incurs excessive computational cost. BFGS modifies gradient descent by introducing a Hessian approximation matrix computed from finite gradient differences. RES utilizes stochastic gradients in lieu of deterministic gradients for both, the determination of descent directions and the approximation of the objective function's curvature. Since stochastic gradients can be computed at manageable computational cost RES is realizable and retains the convergence rate advantages of its deterministic counterparts. Convergence results show that lower and upper bounds on the Hessian egeinvalues of the sample functions are sufficient to guarantee convergence to optimal arguments. Numerical experiments showcase reductions in convergence time relative to stochastic gradient descent algorithms and non-regularized stochastic versions of BFGS. An application of RES to the implementation of support vector machines is developed.

  13. Credit supply and the rise in college tuition: evidence from the expansion in federal student aid programs

    OpenAIRE

    Lucca, David O.; Nadauld, Taylor D.; Shen, Karen

    2015-01-01

    When students fund their education through loans, changes in student borrowing and tuition are interlinked. Higher tuition costs raise loan demand, but loan supply also affects equilibrium tuition costs - for example, by relaxing students' funding constraints. To resolve this simultaneity problem, we exploit detailed student-level financial data and changes in federal student aid programs to identify the impact of increased student loan funding on tuition. We find that institutions more expos...

  14. Perceptions of Parents on the Practice of Private Tuition in Public Learning Institutions in Kenya

    Science.gov (United States)

    Mwebi, Robert B.; Maithya, Redempta

    2016-01-01

    The practice of private tuition outside normal class hours is a phenomenon which has prevailed in Kenyan basic learning institutions despite the repeated ban by the government. The purpose of the study was to establish parental perceptions on extra tuition in public schools in Kenya. Descriptive survey design was used for the study. A total of 40…

  15. The More, the Better? Intensity of Involvement in Private Tuition and Examination Performance

    Science.gov (United States)

    Smyth, Emer

    2008-01-01

    Private tuition, or "shadow education", has become a prominent feature in many countries internationally. A number of studies have found that such tuition is associated with improved examination performance and enhanced access to tertiary education. However, these studies have generally not taken into account important attitudinal…

  16. Prevalence for Private Tuition among Parents, Teachers and Pupils in Public Primary Schools in Machakos County

    Science.gov (United States)

    Kirigwi, Lucy Wambui; Maithya, Redempta

    2016-01-01

    Private tuition refers to tutoring offered outside mainstream teaching. The study sought to establish the difference in prevalence for private tuition among parents, teachers and pupils in public primary schools in Machakos County. The study employed descriptive survey design. The target populations were all teachers, parents and pupils of public…

  17. Buying Your Way into College? Private Tuition and the Transition to Higher Education in Ireland

    Science.gov (United States)

    Smyth, Emer

    2009-01-01

    A number of countries, including Ireland, have experienced a recent growth in the prevalence of "shadow education", that is, paid private tuition outside the schooling system. Previous international studies have indicated that such tuition can enhance academic performance and facilitate access to tertiary education. However, such studies…

  18. The First State Dream Act: In-State Resident Tuition and Immigration in Texas

    Science.gov (United States)

    Flores, Stella M.

    2010-01-01

    In 2001, Texas became the first state to pass an in-state resident tuition policy that benefits undocumented immigrant students, a majority of whom are of Latino/a origin. This analysis estimates the effect of the Texas in-state resident tuition policy on students likely to be undocumented. Using a differences-in-differences strategy and two…

  19. Using the IPEDS Peer Analysis System to Compare Tuition Discount Rates

    Science.gov (United States)

    Duggan, Michael; Mathews, Rebecca

    2005-01-01

    Tuition discounting began in the 1970s as the practice of using university funds to augment federal, state, and private aid and scholarships. When the 1980s saw a decrease in the number of high school seniors, universities began to compete in the arena of price for the first time, sparking what has been called an "arms race" of tuition discounting…

  20. In-State-Tuition for Unauthorized Residents: Teaching a Person to Fish

    Science.gov (United States)

    Dryden, Joe; Martinez, Cristina

    2014-01-01

    Illegal immigration has become one of the most important issues we face as a nation, and as greater attention is focused on the sociological and economic impact of illegal immigration, policies related to in-state-tuition for unauthorized residents are in a state of flux. Since 2005, the number of states offering in-state-tuition for unauthorized…

  1. State Tuition, Fees, and Financial Assistance Policies: For Public Colleges and Universities, 2010-11

    Science.gov (United States)

    Bell, Allison C.; Carnahan, Julie; L'Orange, Hans P.

    2011-01-01

    This report, "State Tuition, Fees, and Financial Assistance Policies for Public Colleges and Universities: 2010-11", examines the philosophies, policies, and procedures that influence decision-making regarding public college and university tuition, student fees, and student financial aid programs. This report also provides information…

  2. The International Market for MBA Qualifications: The Relationship between Tuition Fees and Applications

    Science.gov (United States)

    Elliott, Caroline; Soo, Kwok Tong

    2013-01-01

    This paper explores the relationship between tuition fees charged by MBA programmes and the number of applications to these programmes, using a panel dataset comprising universities from countries across the world. Using Three-Stage-Least-Squares methods for simultaneous equations, we find a two-way relationship between tuition fees and…

  3. Determining a Relationship between Higher Education Financial Position and Tuition Discount Rates

    Science.gov (United States)

    Browning, Julianna

    2013-01-01

    Institutions have increased the practice of tuition discounting, that is, the strategic use of price discrimination. During the past 30 years, both the average percent discount given to students and the proportion of students receiving tuition breaks have increased. As this practice has increased, there are financial determinants and implications…

  4. Tuition Fees and the Time to Graduation: Evidence from a Natural Experiment

    Science.gov (United States)

    Bruckmeier, Kerstin; Fischer, Georg-Benedikt; Wigger, Berthold U.

    2015-01-01

    We used the recent introduction of general tuition fees at public universities in several of the German federal states as a natural experiment to identify whether tuition fees reduce the time to graduation and the extent to which they do so. We employed a difference-in-differences approach with the states that introduced fees as the treatment…

  5. Developing a Model of Tuition Fee Calculation for Universities of Medical Sciences

    Directory of Open Access Journals (Sweden)

    Seyed Amir Mohsen Ziaee

    2018-01-01

    Full Text Available Background: The aim of our study was to introduce and evaluate a practicable model for tuition fee calculation of each medical field in universities of medical sciences in Iran.Methods: Fifty experts in 11 panels were interviewed to identify variables that affect tuition fee calculation. This led to key points including total budgets, expenses of the universities, different fields’ attractiveness, universities’ attractiveness, and education quality. Tuition fees were calculated for different levels of education, such as post-diploma, Bachelor, Master, and Doctor of Philosophy (Ph.D degrees, Medical specialty, and Fellowship. After tuition fee calculation, the model was tested during 2013-2015. Since then, a questionnaire including 20 questions was prepared. All Universities’ financial and educational managers were asked to respond to the questions regarding the model’s reliability and effectiveness.Results: According to the results, fields’ attractiveness, universities’ attractiveness, zone distinction and education quality were selected as effective variables for tuition fee calculation. In this model, tuition fees per student were calculated for the year 2013, and, therefore, the inflation rate of the same year was used. Testing of the model showed that there is a 92% of satisfaction. This model is used by medical science universities in Iran.Conclusion: Education quality, zone coefficient, fields’ attractiveness, universities’ attractiveness, inflation rate, and portion of each level of education were the most important variables affecting tuition fee calculation.Keywords: TUITION FEES, FIELD’S ATTRACTIVENESS, UNIVERSITIES’ ATTRACTIVENESS, ZONE DISTINCTION, EDUCATION QUALITY

  6. Tuition May Outpace the Rate of Inflation for 10th Year in a Row.

    Science.gov (United States)

    Evangelauf, Jean

    1990-01-01

    Early announcements show many colleges are raising tuition 5 to 11 percent, squeezed by pressures to keep costs down and spend more to improve educational quality. A federal investigation of possible tuition price-fixing at 56 institutions has also increased anxiety among administrators. (MSE)

  7. Misplaying the Angles: A Closer Look at the Illinois Tuition Tax Credit Law.

    Science.gov (United States)

    Pathak, Arohi; Wessely, Mike; Mincberg, Elliot

    In 1999, Illinois enacted its tuition tax credit law, which offers tax credits to taxpayers whose own children are attending school, as opposed to tax credits to businesses and/or individuals who contribute to tuition scholarship programs. Recent data suggest that the Illinois tax credit program is benefiting middle- and upper-class families more…

  8. Investigating the status of supplementary tuition in the teaching and learning of mathematics

    Directory of Open Access Journals (Sweden)

    David Mogari

    2009-09-01

    Full Text Available The study seeks to investigate the status of supplementary tuition in the teaching and learning of mathematics and mathematical literacy. The study followed a descriptive survey design involving the use of learner and teacher questionnaires. A convenient sample of mathematics and mathematical literacy teachers together with a stratified sample of their Grade 11 learners were drawn from a purposive sample of highperforming high schools in the East London district of the Eastern Cape, South Africa. The results show that supplementary tuition is popular, especially among girls, and it is in three forms (i.e. private tuition, vacation school and problem-solving classes: Problemsolving classes dominated by working on past/model examination papers is the most preferred; in some instances supplementary tuition is offered for a fee; it is not only confined to poor performing learners; and participation in supplementary tuition is influenced by a variety of factors.

  9. Mida ootame Res Publica poliitikutelt? / Andreas Kaju

    Index Scriptorium Estoniae

    Kaju, Andreas

    2003-01-01

    Res Publica Juventus on piirkondadele saadetud küsitlustega otsinud vastuseid mitmetele probleemidele. Eesmärk Res Publica poliitilise käitumise raamide määramine. Tabel: Juventuse küsimused piirkondadele

  10. Rahvaliit likvideerib Res Publica veeuputust / Janno Reiljan

    Index Scriptorium Estoniae

    Reiljan, Janno, 1951-2018

    2005-01-01

    Ilmunud ka: Molodjozh Estonii 1. august lk. 5. Selgitused Res Publica esimehe Taavi Veskimägi artiklile 25. juuli Postimehes "Pärast meid tulgu või veeuputus". Res Publica ja Rahvaliidu poliitika võrdlus

  11. Miks Res Publica kaotas / Juhan Parts

    Index Scriptorium Estoniae

    Parts, Juhan, 1966-

    2004-01-01

    Ilmunud ka: Severnoje Poberezhje, 29. juuni 2004, lk. 2; Koit, 29. juuni 2004, lk. 6. Europarlamendi valimiste tulemused erakonnale Res Publica. Juhan Partsi kõne 26. juunil Pärnus toimunud Res Publica volikogul. Lühendatult

  12. Padenije Res Publica / Viktoria Jürmann

    Index Scriptorium Estoniae

    Jürmann, Viktoria

    2005-01-01

    Res Publica üks rajajatest, Rein Taagepera, lahkus parteist, süüdistades erakonda paremtsentristlikust maailmavaatest loobumises. Res Publica Riigikogu fraktsioon tahab avaldada umbusaldust haridus- ja teadusminister Mailis Repsile

  13. Res Publica esitas avalduse kaposse / Virkko Lepassalu

    Index Scriptorium Estoniae

    Lepassalu, Virkko, 1971-

    2003-01-01

    Kaposse jõudis Res Publica avaldus, milles palutakse uurida erakonda seadusvastaselt anonüümselt sponsoreerima kutsuva kirja tagamaid. Vt. ka Äripäev 19. veebruar lk. 6 "Kapo ei alustanud Res Publica avalduse peale kriminaalmenetlust"

  14. Rein Taagepera lahkub Res Publicast / Kristjan Roos

    Index Scriptorium Estoniae

    Roos, Kristjan, 1978-

    2005-01-01

    Res Publica asutaja Rein Taagepera, Jaan Einasto, Mare Taagepera ja Lauri Aaspõllu lahkuvad Res Publicast, kuna erakond on nende väitel muutunud paremtsentrist paremäärmuslikuks. Vt. samas: Erakonnad hoiavad uksed valla

  15. 10 teesi Res Publica valitsemisprogrammist aastani 2007

    Index Scriptorium Estoniae

    2004-01-01

    Ilmunud ka: Ottshjot narodu Estonii. Res Publica 2003, 2004, lk. 4-5, 8-9. Res Publica valitsemisprogrammi lubadustest ja täitmisest. Vt. lk. 8-9 Res Publica ministrite olulisemad tegevused 2004. aastal - lühiülevaate teevad Ken-Marti Vaher, Taavi Veskimägi, Marko Pomerants, Toivo Maimets

  16. Challenges of Tuition fee’s decision: Private Universities case in Kosovo

    Directory of Open Access Journals (Sweden)

    Besa Shahini

    2013-12-01

    Full Text Available This study assesses Challenges that Private Universities in Kosovo face when employing tuition fee strategies. Data are collected on May - June 2012 through in-depth interview and questioners with supervisors and students of three Private Universities in Kosovo. As of low purchasing power of students and overall economic crises in Kosovo, students are very sensitive to pricing strategies employed and according to fee they evaluate before and after -enrollment assessment. Students’ academic expectations are much higher relative to their low tuition requirements. In transition economies, employing tuition strategies that satisfy both Universities and students is a challenge for higher educational institutions.

  17. TOUCH POINTS IN UNIVERSITY TUITION - CRITICAL REFLECTIONS ON PBL TUITION PRACTICE AT THE ARCHITECTURE AND URBAN DESIGN PROGRAMMES AT AALBORG UNIVERSITY, DENMARK

    Directory of Open Access Journals (Sweden)

    Anne Kirkegaard Bejder

    2017-01-01

    Full Text Available This is a discussion paper that is based on the didactics reflections of three junior academics at the Architecture and Urban Design (A&UD programme at Aalborg University. The discussion is moored in two narratives representing two typical student tuition situations. Unfolding two touch points where PBL and architectural and engineering teaching converge, this paper discusses how ‘the problem’ and ‘supervision’ at the A&UD programme are hybrid tuition focus points, where principles of PBL and more traditional tuition styles within architecture and engineering come into contact and cause didactic friction. This friction necessitates teachers and supervisors to critically reflect upon their teaching and supervision styles, and upon how ‘the problem’ is put into play in their tuition of students. The paper argues that teachers and supervisors have a heightened obligation and responsibility to monitor, assess, reflect and adjust the integration of the different teaching approaches in their hybrid tuition practices at A&UD.

  18. Demand for private tuition classes under the free education policy. Evidence based on Sri Lanka

    OpenAIRE

    Pallegedara, Asankha

    2011-01-01

    Private tuition classes are growing phenomenon in Sri Lanka especially among students who prepare for competitive national school qualifying examinations. It is one of major education issues under the free education policy in Sri Lanka. It can tarnish the real purpose of free education policy. In this paper, we examine the demand for private tuition classes in Sri Lanka by using two waves of Household Income and Expenditure Surveys (HIES) conducted by the Department of Census and Statistics (...

  19. Comparative Study of Parental Involvement and Private Tuition regarding Educational Attainment of Students

    OpenAIRE

    Malik Amer Atta; Shabnam Razzaq Khan; Shehla Sheikh; Fahmida Akbar

    2014-01-01

    This research work was focused on the “comparative study of parental involvement and private tuition regarding educational attainments of students at secondary school level”. A sample of 80 students of 10th class from ten different secondary schools was taken. To analyze the results t-test was used. In this comparison it was conducted that parental involvement turn out significant effect on student educational attainments as compared to private tuition. On the bases of results researcher has ...

  20. The Effect of Tuition Reimbursement on Turnover: A Case Study Analysis

    OpenAIRE

    Colleen N. Flaherty

    2007-01-01

    Tuition reimbursement programs provide financial assistance for direct costs of education and are a type of general skills training program commonly offered by employers in the United States. Standard human capital theory argues that investment in firm-specific skills reduces turnover, while investment in general skills training could result in increased turnover. However, firms cite increased retention as a motivation for offering tuition reimbursement programs. This rationale for offering t...

  1. Teine Res Musica ilmunud / Jaan Ross

    Index Scriptorium Estoniae

    Ross, Jaan, 1957-

    2010-01-01

    Artiklikogumikust: Res musica [2] : Eesti Muusikateaduse Seltsi ja Eesti Muusika- ja Teatriakadeemia muusikateaduse osakonna aastaraamat / peatoimetaja Urve Lippus. Tallinn : Eesti Muusika- ja Teatriakadeemia, 2010

  2. Factors affecting students’ attitude towards introduction of tuition fees for higher education in the Czech Republic

    Directory of Open Access Journals (Sweden)

    Martina Zámková

    2013-01-01

    Full Text Available Introduction of tuition fees has been much discussed in the Czech Republic over the recent years. Unfortunately, the current system of non-discriminate higher-education funding is no longer supportable, that is, provided that we do not want all universities to be evenly “mediocre”. A well configured tuition-fee system with low payments, suitably complemented by student loans covering not only the tuition fees but also the subsistence costs could be an acceptable vision of the future higher education. The obligation to pay for the study should also prevent from enrolment those applicants that only enter a university to avoid having to cater for themselves in real life. A survey was conducted to find out the views of Czech university students on the introduction of tuition fees and the possible methods of their payment. A subsequent analysis was made to see whether the introduction of tuition fees would aggravate students’ financial situation, whether they would be more motivated to complete the studies in due time, and whether they would be more concerned with the quality of teaching. The survey also analysed the relationship between a respondent’s view on the introduction of tuition fees and the current methods of financing the studies (accommodation, transport, meals, textbooks, …, the household income, and the gender. It also takes into account the attitude of respondents on the system of student loans proposed. In order to interpret the results correspondence and dependence analysis were used.

  3. SWiFT Software Quality Assurance Plan.

    Energy Technology Data Exchange (ETDEWEB)

    Berg, Jonathan Charles [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2016-01-01

    This document describes the software development practice areas and processes which contribute to the ability of SWiFT software developers to provide quality software. These processes are designed to satisfy the requirements set forth by the Sandia Software Quality Assurance Program (SSQAP). APPROVALS SWiFT Software Quality Assurance Plan (SAND2016-0765) approved by: Department Manager SWiFT Site Lead Dave Minster (6121) Date Jonathan White (6121) Date SWiFT Controls Engineer Jonathan Berg (6121) Date CHANGE HISTORY Issue Date Originator(s) Description A 2016/01/27 Jon Berg (06121) Initial release of the SWiFT Software Quality Assurance Plan

  4. Analyzing the Market for Shadow Education in Pakistan: Does Private Tuition Affect the Learning Gap between Private and Public Schools?

    OpenAIRE

    Bisma Haseeb Khan; Sahar Amjad Shaikh

    2013-01-01

    Over the past decade, Pakistan has seen the rapid growth of a third sector in education: shadow education. According to the Annual Survey of Education Report (2013), 34 percent of private school students and 17 percent of public school students undertake private tuition in Punjab. Anecdotal evidence suggests that private tuition has a positive impact on learning outcomes. Keeping this in view, it is possible that private tuition, rather than a difference inschooling quality, is driving the ob...

  5. Frontières sociales, frontières culturelles, frontières techniques

    Directory of Open Access Journals (Sweden)

    2010-12-01

    Full Text Available Les sociétés démocratiques modernes ont basé leur unité sur l'égalité des chances et sur la mobilité sociale. Or, ce modèle d'intégration est fortement mis à l'épreuve aujourd'hui. Des discriminations structurelles viennent contredire le principe l'égalité de traitement. Des barrières difficilement franchissables, quel que soit le niveau, viennent contrecarrer la possibilité de promotion sociale. Un double phénomène est ainsi observable. D'une part, la société se fractionne en des espaces soc...

  6. Res Publica soolo rikkus tavasid / Kai Kalamees

    Index Scriptorium Estoniae

    Kalamees, Kai

    2005-01-01

    Riigikogu aseesimeheks valiti Res Publica liige Taavi Veskimägi, nüüd on Riigikogu juhatuses kaks ühe partei liiget. Riigikogu aseesimeheks tagasi valitud Toomas Vareki hinnangul näitab see samm nii Res Publica kogenematust kui ka Eesti poliitilise kultuuri kehva taset

  7. Res Publica otsib kandepinda / Mirko Ojakivi

    Index Scriptorium Estoniae

    Ojakivi, Mirko

    2004-01-01

    Res Publica peasekretäri Ott Lumi sõnul on erakond teinud tõsised järeldused Euroopa Parlamendi valimiste tulemusest. Res Publica parlamendifraktsiooni väljasõidul pidas kriitilise kõne erakonna esimees Juhan Parts

  8. Isamaaliidu ühinemisjutt ajas Res Publica keema / Toomas Sildam

    Index Scriptorium Estoniae

    Sildam, Toomas, 1961-

    2005-01-01

    Ilmunud ka: Postimees : na russkom jazõke 14. nov., lk 3. Isamaaliidu esimehe Tõnis Lukase ettepanekut Isamaaliidu ja Res Publica ühinemiseks pooldavad ka Res Publica eestseisuse liikmed Juhan Parts ja Tõnis Palts, kuid Res Publica esimehe Taavi Veskimäe kinnitusel läheb Res Publica 2007. aasta parlamendivalimistele vastu iseseisvalt. Lisa: Isamaaliit ja Res Publica

  9. Higher education: free tuition vs. quotas vs. targeted vouchers

    Directory of Open Access Journals (Sweden)

    Eduardo de Carvalho Andrade

    2010-03-01

    Full Text Available This paper compares theoretically three alternative university systems: the current one adopted in Brazil, in which students who perform better in the entering exam obtain the right to attend the public university without paying the full tuition; a system of affirmative action quotas in public universities, to benefit low income students; and a targeted vouchers system that can be used either to pay private or public university tuiton. The comparison indicates that the last system leads to: (i a higher quality of the labor force; (ii a more efficient allocation of resources; and (iii a greater social mobility.Este trabalho compara, do ponto de vista teórico, três sistemas universitários alternativos: o atual adotado pelo Brasil, no qual os alunos das universidades públicas, que são praticamente gratuitas, são escolhidos através de um processo seletivo; um sistema de quotas nas universidades públicas para beneficiar estudantes de baixa renda; e um sistema de vouchers direcionados para estudantes de baixa renda que podem ser utilizados nas universidades privadas ou públicas. A comparação destes três sistemas indica que o último é o mais eficiente, pois gera: (i maior qualidade da mão de obra; (ii alocação mais eficiente dos recursos; e (iii maior mobilidade social.

  10. Forankring af kvarterløft

    DEFF Research Database (Denmark)

    Mazanti, B.

    Kvarterløft er et offentligt initiativ, der har til formål at forbedre sociale, bygningsmæssige og andre forhold i en afgrænset bydel. Kvarterløft er per definition tidsbegrænset til fem eller syv år. Mens et kvarterløft står på, er der ofte en mængde og mangfoldighed af aktiviteter og projekter....

  11. The impact of tuition fees amount on mental health over time in British students.

    Science.gov (United States)

    Richardson, T; Elliott, P; Roberts, R

    2015-09-01

    Previous studies have shown a relationship between debt and mental health problems in students. This study aimed to examine the effect of differences in tuition fees amount on changes in mental health over time. A prospective cohort study followed 390 first-year British students who differed on their tuition fees level at 4 time points across their first 2 years at university. Participants completed measures of global mental health, depression, anxiety, stress, alcohol-related problems at up to four time points in their first two years at university. Mixed-factorial ANOVAs were used to assess the impact of tuition fees amount on changes in scores over time. There was no difference based on fees at Time 1 for anxiety, stress, depression and global mental health. At Time 2, those charged £0-2.9k or £3-4k improved while those charged £8-9k stayed the same. However, this trend reversed by Times 3 and 4. Undergraduates mental health is partially affected by the level of tuition fees; however, the recent increase in tuition fees does not appear to have had a lasting impact at present. © The Author 2015. Published by Oxford University Press on behalf of Faculty of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  12. Examining Admission Policy Change at a Private, Tuition-Dependent, Baccalaureate Institution in an Urban Setting: A Qualitative Case Study

    Science.gov (United States)

    Gage, Christopher B.

    2017-01-01

    Higher education in America is resilient; in the face of seemingly insurmountable challenges, higher education manages to weather the storm of change, pressure, doubt, and criticism. Consider the following challenges: shifting demographics, escalating tuition, decreased state funding, retention and graduation rates, flat tuition revenue,…

  13. Role of Tuition Centers in the Performance and Achievement of Students: A Case of Hyderabad District, Sindh, Pakistan

    Science.gov (United States)

    Sahito, Zafarullah; Khawaja, Mumtaz; Siddiqui, Abida; Shaheen, Anjum; Saeed, Humera

    2017-01-01

    This research is designed to explore the importance of tuition centers in the perception of students. It tries to find out the role, supporting methods, environment and good characteristics of tuition centers, their owners and management to support the student to learn effectively and bring good grades in their board examinations. A qualitative…

  14. Returns to Investment in Ontario University Education, 1960-1990, and Implications for Tuition Fee Policy. Discussion Series, Issue 5.

    Science.gov (United States)

    Stager, David A. A.

    This analysis of Ontario's returns to investment and implications for tuition fee policy updates a 1989 publication titled "Focus on Fees." The paper examines: data on public and private return on investment (ROI) from university education, pattern of ROI rates over time, and impact of tuition fee levels on estimated ROI for various…

  15. Tuition and Fees and Tax Revolt Provisions: Exploring State Fiscal Policy Impacts Using Fixed-Effects Vector Decomposition

    Science.gov (United States)

    Serna, Gabriel Ramom

    2012-01-01

    It is arguably the case that one of the most pressing issues in higher education finance is the increasing price of obtaining a college education, and, more specifically, rising tuition and fees. Because state support to public higher education and tuition and fees at publicly supported colleges and universities have been shown to share an inverse…

  16. The Changing Landscape of Tuition and Enrollment in American Public Higher Education

    Directory of Open Access Journals (Sweden)

    Steven W. Hemelt

    2016-04-01

    Full Text Available The costs of public higher education have risen dramatically in recent years, causing anger among students and concern among policymakers worried about falling college completion rates. In this paper, we explore how public tuition costs affect postsecondary enrollment choices. We examine changes over time in the enrollment decisions of students in states where tuition and fees at public four-year institutions increased rapidly, compared with changes for observationally similar students in states with more modest tuition increases. Using student-level data on twelfth graders in 1992 and 2004 linked to institution-level data, we find a relative decline in the likelihood of attending an in-state public four-year institution among high school graduates from states where public tuition costs increased substantially over this period. Students in states where public tuition increased the most were considerably more likely to enroll in a public two-year college than their counterparts in states that adopted more modest increases. We explore heterogeneity in this pattern of substitution between institutions of varying selectivity and control and for students in policy-relevant socio-demographic subgroups, including those in different parts of the twelfth-grade achievement distribution. Generally, large tuition increases at public four-year colleges have weakened the propensity of high school graduates to enroll in such institutions in their state, and increased their likelihood of enrollment in less prestigious in-state public colleges, out-of-state public institutions, or private universities. These effects are most pronounced among students from families of low socioeconomic status, and nonelite students who perform below the 90th percentile on twelfth-grade math tests.

  17. Didactic friction – challenges and reflections n interlinking PBL and discipline-specific tuition practices

    DEFF Research Database (Denmark)

    Bejder, Anne Kirkegaard; Larsen, Gunvor Riber; Wind, Simon

    2017-01-01

    This is a discussion paper that is based on the didactics reflections of three junior academics at the Architecture and Urban Design (A&UD) programme at Aalborg University. The discussion is moored in two narratives representing two typical student tuition situations. Unfolding two touch points...... didactic friction. This friction necessitates teachers and supervisors to critically reflect upon their teaching and supervision styles, and upon how ‘the problem’ is put into play in their tuition of students. The paper argues that teachers and supervisors have a heightened obligation and responsibility...

  18. Kerr geometry in f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Bejarano, Cecilia; Guzman, Maria Jose [Instituto de Astronomia y Fisica del Espacio (IAFE, CONICET-UBA), Buenos Aires (Argentina); Ferraro, Rafael [Instituto de Astronomia y Fisica del Espacio (IAFE, CONICET-UBA), Buenos Aires (Argentina); Universidad de Buenos Aires, Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Buenos Aires (Argentina)

    2015-02-01

    Null tetrads are shown to be a valuable tool in teleparallel theories of modified gravity. We use them to prove that Kerr geometry remains a solution for a wide family of f(T) theories of gravity. (orig.)

  19. Kerr geometry in f(T) gravity

    International Nuclear Information System (INIS)

    Bejarano, Cecilia; Guzman, Maria Jose; Ferraro, Rafael

    2015-01-01

    Null tetrads are shown to be a valuable tool in teleparallel theories of modified gravity. We use them to prove that Kerr geometry remains a solution for a wide family of f(T) theories of gravity. (orig.)

  20. Improving Quality: How Leaders Advance Student Engagement at Private, Tuition-Driven Institutions

    Science.gov (United States)

    Sluis, Kimberly A.

    2017-01-01

    Students and families, lawmakers, and the general public have become increasingly concerned about the quality of U.S. higher education. Given the competitive higher education landscape, private, tuition-driven colleges and universities are particularly vulnerable to concerns about quality. This study investigates how faculty and administrative…

  1. The Price of Higher Education: How Rational Is British Tuition Fee Policy?

    Science.gov (United States)

    Miller, Brian

    2010-01-01

    This article examines the introduction of variable tuition fees for university students in the UK--an initiative that has become totemic in British higher education policy. The article seeks to identify the origin of this policy, using the work of Michael Oakeshott (1962) as a framework for discussing the rationality of new Labour. The rhetoric of…

  2. Tax justice of the reform of higher education: tuition fees or tax relief?

    Directory of Open Access Journals (Sweden)

    Pavel Semerád

    2012-01-01

    Full Text Available This paper deals with the current reform of higher education which is now being discussed in the Czech Republic. The Government and the Ministry of Education, Youth and Sports propose a tuition fee for students at universities but there is still no clear concept of it. University leaders and students are against the tuition fee because of their fear of getting into debt during their study. The aim of this paper is to show an alternative way of funding higher education without tuition fee loans and from the point of view of tax justice. According to the concept of horizontal justice (Mankiw, 1999 taxpayers should pay taxes at the same rate, but it does not work this way. The result of research is that changes in Act 586/1992 Coll., on income tax and in Act 117/1995 Coll., on state social welfare are required. Abolition of tax relief is proposed where discrimination against other taxpayers and groups of students could occur. By abolition of tax relief for a student and tax relief for a dependent child the amounts of 4,020 CZK and 13,404 CZK respectively could be saved. Changes in legislation could be politically more acceptable than the tuition fee. The solution could also lead to simplification for taxpayers. The target should be equal access to higher education for all students.

  3. Florida's Prepaid College Tuition Program: Marketing a Pre-Need Service.

    Science.gov (United States)

    Gauff, Joseph F., Jr.

    1994-01-01

    A discussion of Florida's college tuition prepayment program describes the plan and its options and examines its marketing implications as a preneed service. It is concluded that the program makes saving for college easy, economical, and completely safe but requires rethinking of conventional marketing strategies and mix. (MSE)

  4. Tuition Tax Credits and Vouchers: Political Finance Alternatives Rather than Rational Alternatives to Education Finance.

    Science.gov (United States)

    Thomas, Robert G.

    This paper describes the use of tuition tax credits and vouchers as political alternatives of choice and competition in a progressive society. School and public administration theorists identify two distinct finance models: the rational and the political. The first part of this paper examines and describes these two models. The next part…

  5. Singing in Primary Schools: Case Studies of Good Practice in Whole Class Vocal Tuition

    Science.gov (United States)

    Lamont, Alexandra; Daubney, Alison; Spruce, Gary

    2012-01-01

    Within the context of British initiatives in music education such as the Wider Opportunities programme in England and the recommendations of the Music Manifesto emphasising the importance of singing in primary schools, the current paper explores examples of good practice in whole-class vocal tuition. The research included seven different primary…

  6. The Incidence of the Tuition-Free High School Program in Japan

    Science.gov (United States)

    Hori, Masahiro; Shimizutani, Satoshi

    2018-01-01

    This paper examines the effect of a tuition-free high school program launched in FY2010 in Japan on the high school enrollment rate and household spending. We have some interesting findings. First, the program contributed to improvement in the high school enrollment rate for poorer households. Second, the program stimulated household spending…

  7. Elasticity of Demand for Tuition Fees at an Institution of Higher Education

    Science.gov (United States)

    Langelett, George; Chang, Kuo-Liang; Ola' Akinfenwa, Samson; Jorgensen, Nicholas; Bhattarai, Kopila

    2015-01-01

    Using a conjoint survey of 161 students at South Dakota State University (SDSU), we mapped a probability-of-enrolment curve for SDSU students, consistent with demand theory. A quasi-demand curve was created from the conditional-logit model. This study shows that along with the price of tuition fees, distance from home, availability of majors, and…

  8. Tuition Pricing and Aid Strategies: A Practical Approach. AIR 1994 Annual Forum Paper.

    Science.gov (United States)

    Fine, Paul L.

    This paper examines the applicability of net tuition revenue models for a highly selective, elite priced, private research university in the southern U.S. Pricing and aid strategies for this university seem to be driven by intuitive assumptions about the economy, market forces, needs-blind admissions, student satisfaction, net price…

  9. Assessing Tuition and Student Aid Strategies: Using Price-Response Measures to Simulate Pricing Alternatives.

    Science.gov (United States)

    St. John, Edward P.

    1994-01-01

    A study used price-response measures from recent national studies to assess college and university pricing (tuition and student aid) alternatives in diverse institutional settings. It is concluded that such analyses are feasible. Analysis indicated limits to "Robin Hood" pricing patterns are predominant in private colleges. Consideration…

  10. State Dream Acts: The Effect of In-State Resident Tuition Policies and Undocumented Latino Students

    Science.gov (United States)

    Flores, Stella M.

    2010-01-01

    This study examines the effect of in-state resident tuition legislation across the United States on the college enrollment odds of individuals likely to be undocumented Latino immigrants. The study employs a differences-indifferences strategy using data from the Current Population Survey's Merged Outgoing Rotation Groups. Foreign-born noncitizen…

  11. Students' Voices: A Report of the Student View of Dyslexia Study Skills Tuition

    Science.gov (United States)

    Kirwan, Bernadette; Leather, Carol

    2011-01-01

    This article reports research using case studies of 22 university students receiving study skills development funded by the Disabled Student's Allowance at an independent dyslexia consultancy. In-depth semi-structured interviews were conducted. The students identify the primary benefits of the tuition as: developing an understanding of dyslexia…

  12. College Financial Aid and the Employee Tuition Benefit Programs of the Fortune 500 Companies.

    Science.gov (United States)

    O'Neill, Joseph P.

    Ways are discussed that internal changes in pricing, tuition collection, and cash-flow management might be sources of financial aid for college students ineligible for state and federal assistance programs. The experiences described are the result of two FIPSE (Fund for the Improvement of Postsecondary Education) projects, one dealing with…

  13. The Evolution of Student Activism and Its Influence on Tuition Fees in South Korean Universities

    Science.gov (United States)

    Shin, Jung Cheol; Kim, Hoon-Ho; Choi, Hong-Sam

    2014-01-01

    This article briefly overviews the student movement working for political democratisation during the authoritarian governments in South Korea. The article focuses on how student activism has changed as a reflection of political developments from the dictatorship through to the civilian democratic governments. Further, it analyses how tuition-fee…

  14. Assessing Tuition- and Debt-Free Higher Education. NASFAA Task Force Report

    Science.gov (United States)

    National Association of Student Financial Aid Administrators, 2017

    2017-01-01

    The Assessing Tuition- and Debt-Free Higher Education Task Force was convened in July 2016. Charged by the National Association of Student Financial Aid Administrators's (NASFAA's) Board of Directors with evaluating the existing landscape of state and local promise programs with a focus on scaling such models to the national level, the task force…

  15. Who Gets the Credit? Who Pays the Consequences? The Illinois Tuition Tax Credit. Special Report.

    Science.gov (United States)

    Pathak, Arohi; Keenan, Nancy

    In 1999, Illinois enacted a tuition tax credit program. Tax credit supporters suggest tax credits help low-income students. However, opponents argue that they disproportionately benefit higher-income families whose children are already attending private schools and may decrease already limited resources available to public schools. New data from…

  16. The Impact of Tuition Fees and Support on University Participation in the UK. CEE DP 126

    Science.gov (United States)

    Dearden, Lorraine; Fitzsimons, Emla; Wyness, Gill

    2011-01-01

    Understanding how policy can affect university education is important for understanding how governments can promote human capital accumulation. This paper exploits historic changes to university funding policies in the UK to estimate the impact of tuition fees and maintenance grants on university participation. Previous work on this, which largely…

  17. Sandia SWiFT Wind Turbine Manual.

    Energy Technology Data Exchange (ETDEWEB)

    White, Jonathan; LeBlanc, Bruce Philip; Berg, Jonathan Charles; Bryant, Joshua; Johnson, Wesley D.; Paquette, Joshua

    2016-01-01

    The Scaled Wind Farm Technology (SWiFT) facility, operated by Sandia National Laboratories for the U.S. Department of Energy's Wind and Water Power Program, is a wind energy research site with multiple wind turbines scaled for the experimental study of wake dynamics, advanced rotor development, turbine control, and advanced sensing for production-scale wind farms. The SWiFT site currently includes three variable-speed, pitch-regulated, three-bladed wind turbines. The six volumes of this manual provide a detailed description of the SWiFT wind turbines, including their operation and user interfaces, electrical and mechanical systems, assembly and commissioning procedures, and safety systems. Further dissemination only as authorized to U.S. Government agencies and their contractors; other requests shall be approved by the originating facility or higher DOE programmatic authority. 111 UNCLASSIFIED UNLIMITED RELEASE Sandia SWiFT Wind Turbine Manual (SAND2016-0746 ) approved by: Department Manager SWiFT Site Lead Dave Minster (6121) Date Jonathan White (6121) Date SWiFT Site Supervisor Dave Mitchell (6121) Date Note: Document revision logs are found after the title page of each volume of this manual. iv

  18. The Issue of Private Tuition: An Analysis of the Practice in Mauritius and Selected South-east Asian Countries

    Science.gov (United States)

    Foondun, A. Raffick

    2002-11-01

    Private tuition is an issue of growing concern and is practised in both developed and developing countries. Although it has certain positive effects, it imposes a considerable financial burden on parents and often gives rise to abuses. The present study, which focuses on the primary level, addresses a number of questions, such as the extent of the practice, its implications, the various forms that it takes, attitudes towards it, why children take private tuition, why teachers provide it, and policies to deal with the issue. The discussion ends with a plea for more research on private tuition in order to provide a basis for policies to address the problem.

  19. DFT, FT-IR, FT-Raman and vibrational studies of 3-methoxyphenyl boronic acid

    Science.gov (United States)

    Patil, N. R.; Hiremath, Sudhir M.; Hiremath, C. S.

    2018-05-01

    The aim of this work is to study the possible stable, geometrical molecular structure, experimental and theoretical FT-IR and FT-Raman spectroscopic methods of 3-Methoxyphenyl boronic acid (3MPBA). FT-IR and FT-Raman spectra were recorded in the region of 4000-400 cm-1 and 40000-50 cm-1 respectively. The optimized geometric structure and vibrational wavenumbers of the title compound were searched by B3LYP hybrid density functional theory method with 6-311++G (d, p) basis set. The Selectedexperimentalbandswereassignedandcharacterizedonthebasisofthescaledtheoreticalwavenumbersby their potential energy distribution (PED) of the vibrational modes obtained from VEDA 4 program. Finally, the predicted calculation results were applied to simulated FT-IR and FT-Raman spectra of the title compound, which show agreement with the observed spectra. Whereas, it is observed that, the theoretical frequencies are more than the experimental one for O-H stretching vibration modes of the title molecule.

  20. ResStock Analysis Tool | Buildings | NREL

    Science.gov (United States)

    Energy and Cost Savings for U.S. Homes Contact Eric Wilson to learn how ResStock can benefit your approach to large-scale residential energy analysis by combining: Large public and private data sources uncovered $49 billion in potential annual utility bill savings through cost-effective energy efficiency

  1. The Effect of Tuition Fees on Student Enrollment and Location Choice – Interregional Migration, Border Effects and Gender Differences

    DEFF Research Database (Denmark)

    Alecke, Björn; Burgard, Claudia; Mitze, Timo

    This paper investigates the effects of tuition fees on the university enrollment and location decision of high school graduates in Germany. After a Federal Constitutional Court decision in 2005, 7 out of 16 German federal states introduced tuition fees for higher education. In the empirical...... analysis, we use the variation over time and across regions in this institutional change in order to isolate the causal effect of tuition fees on student enrollment and migration. Controlling for a range of regional- and university-specific effects, our results from Difference-in-Differences estimations...... show that there is generally no effect of tuition fees on internal enrollment rates. However, we find a redirecting effect on first-year students‘ migratory behavior as indicated by a signicant drop in the gross in-migration rates in fee-charging states. Further, our results point at a stronger...

  2. The Effect of Tuition Fees on Student Enrollment and Location Choice: Interregional Migration, Border Effects and Gender Differences

    DEFF Research Database (Denmark)

    Alecke, Bjoern; Burgard, Claudia; Mitze, Timo

    This paper investigates the effects of tuition fees on the university enrollment and location decision of high school graduates in Germany. After a Federal Constitutional Court decision in 2005, 7 out of 16 German federal states introduced tuition fees for higher education. In the empirical...... analysis, we use the variation over time and across regions in this institutional change in order to isolate the causal effect of tuition fees on student enrollment and migration. Controlling for a range of regional- and university-specific effects, our results from Difference-in-Differences estimations...... show that there is generally no effect of tuition fees on internal enrollment rates. However, we find a redirecting effect on first-year students' migratory behavior as indicated by a significant drop in the gross in-migration rates in fee-charging states. Further, our results point at a stronger...

  3. Tuition reduction is the key factor determining tax burden of graduate students under the Tax Cuts and Job Act.

    Science.gov (United States)

    Lawston, Patricia M; Parker, Michael T

    2017-01-01

    Background : The proposed Tax Cuts and Jobs Act (H.R.1) has stirred significant public debate on the future of American economics.  While supporters of the plan have championed it as a necessity for economic revitalization, detractors have pointed out areas of serious concern, particularly for low- and middle-income Americans.  One particularly alarming facet of the plan is the radical change to education finance programs and taxation of students in higher education.  Methods :  By analyzing actual income and tuition of a public and a private university student, as well as the 'average' graduate student, we investigated the effect of both the House and Senate versions of H.R. 1 on taxation of students of various family structures.  Results :  Our findings indicate that taxable tuition would be the greatest contributor to graduate student tax burden across all four categories of filing status.  However, when tuition reduction is upheld or a student is on sustaining fees rather than full tuition, graduate students would realize decreases in taxation. Conclusions :  Overall, we conclude that removal of tuition reduction would result in enormous tax burdens for graduate students and their families and that these effects are dependent not only on the status of the student in their degree program but also on their tuition and stipend, and therefore the institution they attend.

  4. ATTITUDES TOWARDS TUITION FEES PAYMENT IN TERTIARY EDUCATION: A SURVEY OF SUNYANI POLYTECHNIC MARKETING STUDENTS IN SUNYANI GHANA

    Directory of Open Access Journals (Sweden)

    Samuel Asuamah Yeboah

    2012-01-01

    Full Text Available The paper aims at contributing to knowledge in the area of educational finance by assessing student’s attitude towards tuition fees payment. The research is based on quantitative research design and a survey of the marketing students in Sunyani polytechnic that were selected using convenience sample method for a sample of 149. Data were analysed using percentages and one-ANOVA using the SPSS. The findings indicate that student’s knowledge on tuition fees and user fees are low. Respondents did not know that they do not pay tuition fees which are constitutional provision. Respondents consider it appropriate to contribute to the financing of their education but are not will to pay tuition. Parents of students should fund the education of their wards. Students face inadequate funding in their education and that result in worrying which affect their concentration while studying. Respondents are not willing to pay tuition fees and also the current user fees are high. Sources of funding students education are remittance from parents/friends/relative and scholarship. Those who are beneficiaries of the loan spend the amount mostly on course of study and on living expenses. This study should be replicated in other departments in the school and in other tertiary school to assess if these findings will be replicated. Since parents are the major financiers of education future study should target them to assess their attitude towards tuition fee payment.

  5. The purifying bridge of Res Publica / Rein Taagepera

    Index Scriptorium Estoniae

    Taagepera, Rein, 1933-

    2004-01-01

    Res Publica edust Eesti poliitilisel maastikul. Autor käsitleb Res Publicat kui puhastava toimega ja silla funktsiooni täitvat parteid, mis üritab siduda tervikuks Keskerakonna ja Reformierakonna seisukohad

  6. Parts ei soovi Res Publica esimehe ametit / Tuuli Koch

    Index Scriptorium Estoniae

    Koch, Tuuli

    2005-01-01

    Kõige tõenäolisem kandidaat Res Publica juhi kohale on Taavi Veskimägi, aseesimeesteks kandideerivad Marko Mihkelson ja Henn Pärn. Res Publica fraktsiooni koosolekul leidis Mihhail Lotman, et erakond võiks olla feminiinsem

  7. Res Publica meelitab valla- ja linnajuhte / Henrik Roonemaa

    Index Scriptorium Estoniae

    Roonemaa, Henrik

    2001-01-01

    Valitsusliidu regionaalpoliitikas pettunud 30 omavalitsusjuhti on astunud ühenduse Res Publica liikmeks, lootes selle põhjal tekkiva partei abil kohaliku ja riigivõimu taas omavahel suhtlema panna. Vt. samas Res Publica liikmetest omavalitsusjuhid

  8. Biochemical applications of FT-IR spectroscopy

    NARCIS (Netherlands)

    Pistorius, A.M.A.

    1996-01-01

    This thesis describes the use of (FT-)IR spectroscopy in general biochemical research. In chapter 3, IR spectroscopy is used in the quantitation of residual detergent after reconstitution of an integral membrane protein in a pre-defined lipid matrix. This chapter discusses the choice of the

  9. Quantitative gas analysis with FT-IR

    DEFF Research Database (Denmark)

    Bak, J.; Larsen, A.

    1995-01-01

    Calibration spectra of CO in the 2.38-5100 ppm concentration range (22 spectra) have been measured with a spectral resolution of 4 cm(-1), in the mid-IR (2186-2001 cm(-1)) region, with a Fourier transform infrared (FT-IR) instrument. The multivariate calibration method partial least-squares (PLS1...

  10. FT 3 Flight Test Cards for Export

    Science.gov (United States)

    Marston, Michael L.

    2015-01-01

    These flight test cards will be made available to stakeholders who participated in FT3. NASA entered into the relationship with our stakeholders, including the FAA, to develop requirements that will lead to routine flights of unmanned aircraft systems flying in the national airspace system.

  11. Juhan Parts soovib Res Publica tagasi tippu viia / Toomas Sildam

    Index Scriptorium Estoniae

    Sildam, Toomas, 1961-

    2004-01-01

    Res Publica esimees peaminister Juhan Parts plaanib minna oma erakonnaga kohalikele valimistele ning uurib võimalusi paremerakondade ühinemiseks. Rakveres toimunud erakonna üldkogust. Lisad: Peaministri neli rasket hetke; Res Publica ministrid said parteilt toetuse. Vt. samas: Reformierakond kiitis Res Publicat hea koostöö eest; Parts: 191 vastuhäält on hea tulemus

  12. Kes tegelikult lõid Res Publica? / Valeri Kalabugin

    Index Scriptorium Estoniae

    Kalabugin, Valeri

    2005-01-01

    Enne erakonnaks kuulutamist oli Res Publica Eesti iseseisvust ja demokraatiat taotlev ühendus, kuhu on kuulunud mitmed poliitika- ning ühiskonnategelased. Vt. samas: Ühendus Res Publica avaldus. Küsimustele vastavad Res Publica avalike suhete juht Riina Vändre, Riigikogu liige Mart Nutt, ajakirjanik Toomas Kümmel

  13. Preparing the next generation of health care providers: A description and comparison of nurse practitioner and medical student tuition in 2015.

    Science.gov (United States)

    Riley, Lydia; Litsch, Tyler; Cook, Michelle L

    2016-01-01

    The purpose of this study was twofold: to describe the average cost of nurse practitioner (NP) tuition based on degree program, program type, and geography; and to compare the cost of NP tuition to medical school tuition. A listing of all NP degree granting universities was obtained from the American Association of Colleges of Nursing during the fall of 2014, and tuition data were obtained from university websites. Medical school tuition data were obtained online during the fall of 2014 from the American Association of Medical Colleges. Average 1-year tuition rates were calculated for NP programs and medical schools and compared across private and public institutions. Average 1-year resident tuition for public university NP programs ranges between $8671 and $11,077 based on type of program. The cost of 1-year NP program tuition at the master's and the doctoral level is much lower than the cost of 1-year medical school tuition at both private and public universities. NPs can perform many of the same services as physicians in the primary care setting with comparable outcomes, yet the cost of educating NPs is much lower. NPs are a cost-effective solution to the healthcare workforce shortage. ©2015 American Association of Nurse Practitioners.

  14. Energy profile, spectroscopic (FT-IR, FT-Raman and FT-NMR) and DFT studies of 4-bromoisophthalic acid

    Science.gov (United States)

    Arjunan, V.; Thirunarayanan, S.; Mohan, S.

    2018-04-01

    The stable conformer of 4-bromoisophthalic acid (BIPA) has been identified by potential energy profile analysis. All the structural parameters of 4-bromoisophthalic acid are determined by B3LYP method with 6-311++G**, 6-31G** and cc-pVTZ basis sets. The fundamental vibrations are analysed with the use of FT-IR (4000-400 cm-1) and FT-Raman (4000-100 cm-1) spectra. The harmonic vibrational frequencies are theoretically calculated and compared with experimental FTIR and FT-Raman frequencies. The 1H and 13C NMR spectra have been analysed and compared with theoretical 1H and 13C NMR chemical shifts calculated by gauge independent atomic orbital (GIAO) method. The electronic properties, such as HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energies are determined by B3LYP/cc-pVTZ method. The electron density distribution and site of chemical reactivity of BIPA molecule have been obtained by mapping electron density isosurface with molecular electrostatic potential (MEP). Stability of the molecules arising from hyperconjugative interactions, charge delocalizations have been analysed by using natural bond orbital (NBO) analysis. The thermodynamic properties and atomic natural charges of the compound are analysed and the reactive sites of the molecule are identified. The global and local reactivity descriptors are evaluated to analyse the chemical reactivity and site selectivity of molecule through Fukui functions.

  15. Detection of metanil yellow contamination in turmeric using FT-Raman and FT-IR spectroscopy

    Science.gov (United States)

    Dhakal, Sagar; Chao, Kuanglin; Qin, Jianwei; Kim, Moon; Schmidt, Walter; Chan, Dian

    2016-05-01

    Turmeric is well known for its medicinal value and is often used in Asian cuisine. Economically motivated contamination of turmeric by chemicals such as metanil yellow has been repeatedly reported. Although traditional technologies can detect such contaminants in food, high operational costs and operational complexities have limited their use to the laboratory. This study used Fourier Transform Raman Spectroscopy (FT-Raman) and Fourier Transform - Infrared Spectroscopy (FT-IR) to identify metanil yellow contamination in turmeric powder. Mixtures of metanil yellow in turmeric were prepared at concentrations of 30%, 25%, 20%, 15%, 10%, 5%, 1% and 0.01% (w/w). The FT-Raman and FT-IR spectral signal of pure turmeric powder, pure metanil yellow powder and the 8 sample mixtures were obtained and analyzed independently to identify metanil yellow contamination in turmeric. The results show that FT-Raman spectroscopy and FT-IR spectroscopy can detect metanil yellow mixed with turmeric at concentrations as low as 1% and 5%, respectively, and may be useful for non-destructive detection of adulterated turmeric powder.

  16. An FT-Raman, FT-IR, and Quantum Chemical Investigation of Stanozolol and Oxandrolone

    Directory of Open Access Journals (Sweden)

    Tibebe Lemma

    2017-12-01

    Full Text Available We have studied the Fourier Transform Infrared (FT-IR and the Fourier transform Raman (FT-Raman spectra of stanozolol and oxandrolone, and we have performed quantum chemical calculations based on the density functional theory (DFT with a B3LYP/6-31G (d, p level of theory. The FT-IR and FT-Raman spectra were collected in a solid phase. The consistency between the calculated and experimental FT-IR and FT-Raman data indicates that the B3LYP/6-31G (d, p can generate reliable geometry and related properties of the title compounds. Selected experimental bands were assigned and characterized on the basis of the scaled theoretical wavenumbers by their total energy distribution. The good agreement between the experimental and theoretical spectra allowed positive assignment of the observed vibrational absorption bands. Finally, the calculation results were applied to simulate the Raman and IR spectra of the title compounds, which show agreement with the observed spectra.

  17. Energy balance in the ohmically heated FT

    International Nuclear Information System (INIS)

    Bartiromo, R.; Brusati, M.; Cilloco, F.

    1981-01-01

    A typical discharge in the FT Tokamak at 60 kG has been studied in detail in order to derive the power balance between the ohmic input and the plasma losses. Impurity and radiation losses together with ion and electron energy balance are discussed. A power transport term for electrons is derived which is ascribed to anomalous thermal conduction. This resulting thermal transport is compared with those derived from different proposed scalings

  18. Borgerdeltagelse i kvarterløft

    DEFF Research Database (Denmark)

    Larsen, Jacob Norvig

    Rapporten handler om borgerdeltagelse i den første fase af de syv første kvarterløft. Det vil sige det første ca. halvandet år, hvor kvarterløftorganisationen skulle på plads, borgerne skulle mobiliseres og deres idéer og ønsker bringes frem og omsættes til kvarterplaner. Datagrundlaget for analy...

  19. Farm Shop : Augmenter l'accès aux matières premières agricoles au ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Farm Shop est un modèle de franchise social novateur qui permet d'obtenir des matières premières d'excellente qualité à des prix abordables grâce à des économies d'échelle. Il forme également des franchisés et des agriculteurs sur la façon d'utiliser les matières premières. Au cours de ses trois premières années ...

  20. Cosmography in f(T) gravity

    International Nuclear Information System (INIS)

    Capozziello, S.; Cardone, V. F.; Farajollahi, H.; Ravanpak, A.

    2011-01-01

    Based only on the assumption that the Universe is homogenous and isotropic on large scales, cosmography is an ideal tool to investigate the cosmic expansion history in an almost model-independent way. Fitting the data on the luminosity distance and baryon acoustic oscillations allows to determine the confidence ranges for the cosmographic parameters hence giving some quantitative constraints that at whatever theory has to fulfill. As an application, we consider here the case of teleparallel gravity also referred to as f(T) gravity. To this end, we first work out analytical expressions to express the present day values of f(T) derivatives as a function of the cosmographic parameters, which hold under quite general and physically motivated conditions. We then use the constraints coming from cosmography to find out the confidence ranges for f(T) derivatives up to the fifth order and show how these can be used to check the viability of given teleparallel gravity models without the need to explicitly solve the second order dynamic equations.

  1. RES-E-NEXT: Next Generation of RES-E Policy Instruments

    Energy Technology Data Exchange (ETDEWEB)

    Miller, M.; Bird, L.; Cochran, J.; Milligan, M.; Bazilian, M. [National Renewable Energy Laboratory, Golden, CO (United States); Denny, E.; Dillon, J.; Bialek, J.; O’Malley, M. [Ecar Limited (Ireland); Neuhoff, K. [DIW Berlin (Germany)

    2013-07-04

    The RES-E-NEXT study identifies policies that are required for the next phase of renewable energy support. The study analyses policy options that secure high shares of renewable electricity generation and adequate grid infrastructure, enhance flexibility and ensure an appropriate market design. Measures have limited costs or even save money, and policies can be gradually implemented.

  2. Much Ado about €500: Do Tuition Fees Keep German Students from Entering University? Evidence from a Natural Experiment Using DiD Matching Methods

    Science.gov (United States)

    Baier, Tina; Helbig, Marcel

    2014-01-01

    This paper estimates the effect of tuition fees on enrolment behaviour among prospective students in Germany. According to the rational choice theory (RCT), we argue that due to the higher costs brought on by such fees tuition fees should have a negative effect on student's enrolment. This should be even more pronounced among prospective students…

  3. Effect of hypoproteinemia (HP) upon FT4 and FT3 by kinetic radioligandassay (RLA)

    International Nuclear Information System (INIS)

    Bottger, I.G.; Schneck, H.J.

    1985-01-01

    HP, especially hypoalbuminemia (HA), has been associated with false low FT4 by RLA, predominantly of the analogue tracer type. Based upon previous more favourable findings in severe nonthyroidal illness (NTI), this study was designed to study this problem in more detail. Two groups of patients with severe NTI (polytrauma) were selected on the basis of their total serum protein (TSP) concentration and studied during intensive-care. Group I: N = 25, TSP 5.9 g/dl (6.0 - 7.7), A/G: 1.5, sera: N = 76. I and II: low-dose heparin (i.v. 5000 U/24 h), non-detectable in the periphery. The RLA kits used were: FT4/T4 and FT3/T3 (kinetic two-tube), and TBG, Corning Medical, rT3, Serono, TSH, Henning-Berlin, TSP/electrophoresis standard technique. The findings indicate: 1. Typical findings for follow-up of severe NTI; 2. No detection of a significant effect of HP/HA upon these RLAs for FT4 and FT3; and 3. The inter-group differences are most likely due to more severe NT1 in I (R/sub x/, A/G, rT3)

  4. Development of F.T. Raman Spectroscopy

    Science.gov (United States)

    1989-06-19

    Virginia, 22217 5000, U.S.A*.ELMNNO NONOACSINN. End of Year Report on the contract 2 PERSONAL AU7I40R(S) P.J. Hda and M. Fl cm 3a TYPE OF REPORT 13b. TIME...to do, have .- considerable progress. The area in which we have .ated involves the zeolites. We have sorbed pyridine tc .- of -eolites ( acidic and...react-ion using F.T. Raman methods and then to eX.plore rmechaniszzs, types of acid sites involved and the role o.: temperature. -:olla-’-rators

  5. Development of modified FT (MFT) process

    Energy Technology Data Exchange (ETDEWEB)

    Jinglai Zhou; Zhixin Zhang; Wenjie Shen [Institute of Coal Chemistry, Taiyuan (China)] [and others

    1995-12-31

    Two-Stage Modified FT (MFT) process has been developed for producing high-octane gasoline from coal-based syngas. The main R&D are focused on the development of catalysts and technologies process. Duration tests were finished in the single-tube reactor, pilot plant (100T/Y), and industrial demonstration plant (2000T/Y). A series of satisfactory results has been obtained in terms of operating reliability of equipments, performance of catalysts, purification of coal - based syngas, optimum operating conditions, properties of gasoline and economics etc. Further scaling - up commercial plant is being considered.

  6. Constraining f(T) teleparallel gravity by big bang nucleosynthesis. f(T) cosmology and BBN

    Energy Technology Data Exchange (ETDEWEB)

    Capozziello, S. [Universita di Napoli ' ' Federico II' ' , Complesso Universitario di Monte Sant' Angelo, Dipartimento di Fisica ' ' E. Pancini' ' , Napoli (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Napoli (Italy); Gran Sasso Science Institute, L' Aquila (Italy); Lambiase, G. [University of Salerno, Dipartimento di Fisica E.R. Cainaiello, Fisciano (Italy); INFN, Gruppo Collegato di Salerno, Sezione di Napoli, Fisciano (Italy); Saridakis, E.N. [National Technical University of Athens, Department of Physics, Athens (Greece); Baylor University, CASPER, Physics Department, Waco, TX (United States)

    2017-09-15

    We use Big Bang Nucleosynthesis (BBN) observational data on the primordial abundance of light elements to constrain f(T) gravity. The three most studied viable f(T) models, namely the power law, the exponential and the square-root exponential are considered, and the BBN bounds are adopted in order to extract constraints on their free parameters. For the power-law model, we find that the constraints are in agreement with those obtained using late-time cosmological data. For the exponential and the square-root exponential models, we show that for reliable regions of parameters space they always satisfy the BBN bounds. We conclude that viable f(T) models can successfully satisfy the BBN constraints. (orig.)

  7. Constraining f(T) teleparallel gravity by big bang nucleosynthesis. f(T) cosmology and BBN

    International Nuclear Information System (INIS)

    Capozziello, S.; Lambiase, G.; Saridakis, E.N.

    2017-01-01

    We use Big Bang Nucleosynthesis (BBN) observational data on the primordial abundance of light elements to constrain f(T) gravity. The three most studied viable f(T) models, namely the power law, the exponential and the square-root exponential are considered, and the BBN bounds are adopted in order to extract constraints on their free parameters. For the power-law model, we find that the constraints are in agreement with those obtained using late-time cosmological data. For the exponential and the square-root exponential models, we show that for reliable regions of parameters space they always satisfy the BBN bounds. We conclude that viable f(T) models can successfully satisfy the BBN constraints. (orig.)

  8. Afrique : ressources minières, environnement et gouvernance ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    25 janv. 2011 ... ils regorgent de richesses inouïes », assure Bonnie Campbell, directrice du Groupe de recherche sur les activités minières en Afrique (GRAMA) et titulaire de la Chaire C.-A. Poissant de recherche sur la gouvernance et l'aide au développement, faisant référence aux ressources minières et pétrolières dont ...

  9. Resúmenes de proyectos de grado

    Directory of Open Access Journals (Sweden)

    Revista Ingeniería e Investigación

    2002-01-01

    Full Text Available Para la Facultad de Ingeniería de la Universidad Nacional de Colombia sede Bogotá los trabajos desarrollados por los estudiantes con la dirección de docentes como condición para obtener su título profesional, expresan la dinámica de las investigaciones y las áreas de conocimiento en la que están comprometidos los diferentes estamentos de la facultad, Es por esta razón que la revista Ingeniería e Investigación comenzará a publicar, a partir de la fecha los resúmenes de los trabajos de pregrado y las tesis de posgrado que permanentemente se están desarrollando en la Facultad de Ingeniería.

  10. FT-IR, FT-Raman and UV-visible spectra of potassium 3-furoyltrifluoroborate salt

    Science.gov (United States)

    Iramain, Maximiliano A.; Davies, Lilian; Brandán, Silvia Antonia

    2018-04-01

    The potassium 3-furoyltrifluoroborate salt has been experimentally characterized by means of FT-IR, FT-Raman and UV-Visible spectroscopies. Here, the predicted FT-IR, FT-Raman and UV-visible spectra by using theoretical B3LYP/6-31G* and 6-311++G** calculations show very good correlations with the corresponding experimental ones. The solvation energies were predicted by using both levels of calculations. The NBO analyses reveal the high stability of the salt by using the B3LYP/6-31G* level of theory while the AIM studies evidence the ionic characteristics of the salt in both media. The strong blue colour observed on the K atom by using the molecular electrostatic potential mapped suggests that this region act as typical electrophilic site. The gap values have revealed that the salt in gas phase is more reactive than in solution, as was reported in the literature while, the F13⋯H6 interaction together with the Ksbnd O bond observed by the studies of their charges could probably modulate the reactivities of this salt in aqueous solution. The force fields were computed with the SQMFF methodology and the Molvib program to perform the complete vibrational analysis. Then, the 39 vibration normal modes classified as 26 A'+ 13 A″ were completely assigned and their force constants are also reported.

  11. Res Publica Euroopas / Eiki Berg, Marko Mihkelson ; interv. Lauri Lugna

    Index Scriptorium Estoniae

    Berg, Eiki, 1970-

    2003-01-01

    Res Publica välispoliitika eksperdid Eiki Berg ja Marko Mihkelson vastavad küsimustele, mis käsitlevad Res Publica saamist Euroopa Rahvapartei (ERP) liikmeks, koostööd ERP-ga, EL-i põhiseaduslikku lepet

  12. Res Publica viskab Oleg Rebase välja

    Index Scriptorium Estoniae

    2006-01-01

    Res Publica Tallinna piirkonna juhatus leidis, et Oleg Rebane läks Keskerakonna provokatsiooniga kaasa minnes vastuollu Res Publica põhimõtetega. Tallinna linnapea Jüri Ratase suhtes algatatud umbusaldushääletuse põhjustest. Sven Sester vastab küsimusele, mis seotud Oleg Rebase ja Tõnis Bittmani juhtumiga

  13. The Impact of "Tuition-Paying" Policy on Retention and Graduation Rates at the University of Ghana

    Science.gov (United States)

    Atuahene, Francis

    2013-01-01

    African universities over the past decade have developed new modes of financial mobilization in search for fiscal solutions to the declining public support for higher education. The creation of the "tuition-paying" ("dual track" or "fee-paying") admission track policy, a variant of cost sharing, is one of such…

  14. "If I Play My Sax My Parents Are Nice to Me": Opportunity and Motivation in Musical Instrument and Singing Tuition

    Science.gov (United States)

    Driscoll, Jennifer

    2009-01-01

    Little consideration has been given to the factors which motivate children to take up music tuition, or their reasons for giving up. In part, this is a reflection of the limited extent to which children have been consulted directly in relation to issues exclusively affecting them. This study considered opportunity and motivation for young people…

  15. In My Own Time: Tuition Fees, Class Time and Student Effort in Non-Formal (Or Continuing) Education

    Science.gov (United States)

    Bolli, Thomas; Johnes, Geraint

    2015-01-01

    We develop and empirically test a model which examines the impact of changes in class time and tuition fees on student effort in the form of private study. The data come from the European Union's Adult Education Survey, conducted over the period 2005-2008. We find, in line with theoretical predictions, that the time students devote to private…

  16. Determinants of Participation and Expenditure Patterns of Private Tuition Received by Primary School Students in Penang, Malaysia: An Exploratory Study

    Science.gov (United States)

    Jelani, Juliana; Tan, Andrew K. G.

    2012-01-01

    In this exploratory study, the censored Tobit model is applied on primary data collected amongst parents of primary school students in Penang, Malaysia to examine the determinants of participation and expenditures on private tuition (PT). Results of the marginal effects indicate that socio-demographic characteristics--ethnicity, household income,…

  17. Undocumented Immigrants and State Higher Education Policy: The Politics of In-State Tuition Eligibility in Texas and Arizona

    Science.gov (United States)

    Dougherty, Kevin J.; Nienhusser, H. Kenny; Vega, Blanca E.

    2010-01-01

    Every year about 65,000 undocumented students graduate from U.S. high schools. A major obstacle to their attending college is not being eligible for in-state tuition. Today, nine states permit it while four prohibit it. Even if the federal DREAM Act passes, state policy decisions will continue to strongly shape college opportunities for…

  18. The Impacts of Tuition Rate Changes on College Undergraduate Headcounts and Credit Hours Over Time--A Case Study.

    Science.gov (United States)

    Chressanthis, George A.

    1986-01-01

    Using 1964-1983 enrollment data for a small Michigan state college, this paper charts tuition rate change impacts on college undergraduate headcounts and credit hours over time. Results indicate that student behavior follows the law of demand, varies with class standing, corroborates human capital investment models, and invalidates uniform tuition…

  19. Effects of Private Tuition on the Academic Achievement of Secondary School Students in Subject of Mathematics in Kohat Division, Pakistan

    Directory of Open Access Journals (Sweden)

    Qaiser Suleman

    2014-02-01

    Full Text Available Research reveals that private or home tuition after school time plays a crucial role in strengthening and improving student’s academic achievement. The purpose of the study was to explore the effects of private tuition on the academic achievement of students in subject of mathematics at secondary school level. All the students at secondary school level in Kohat Division (Pakistan constituted the population of the study. The study was delimited to the students of Government High School Ahmadi Banda Karak only. Fifty students of class 09 were selected as sample of the study. Sample students were divided into two groups i.e. control group and experimental group by equating them on the basis of their previous knowledge in subject of mathematics as determined through a pre-test. Each group was composed of 25 students. Students of the experimental group were engaged in tuition for two hours after school time. The study was experimental in nature therefore, “The pre-test-post-test Equivalent Groups Design” was used for the collection of data. Statistical tools i.e. the mean, standard deviation and differences of means were computed for each group. Significance of difference between the mean scores of both the experimental and control groups on the variable of pre-test and post test scores was tested at 0.05 levels by applying t-test. After statistical analysis of the data, the researchers concluded that there is significant positive effect of private tuition on the academic achievement of students in subject of mathematics at secondary school level. Based on the findings, it was recommended that parents should arrange private tuition for their children to move up their achievement level in subject of mathematics.

  20. The evaluation of free thyroid hormones (FT4 and FT3) in the routine diagnosis of thyroid function

    International Nuclear Information System (INIS)

    Passath, A.; Leb, G.; Goebel, R.

    1985-01-01

    The validity of the free thyroid hormone parameters (FT 4 and FT 3 ) was verified in a random sample of 154 ambulatory patients with thyroid conditions. The ''euthyroid range'' of FT 4 was between 15.67 and 30.66 pmol/l; median 21.98 pmol/l. The distribution of the FT 4 readings peaked on the left and sloped to the right (log normal). In our laboratory, the ''euthyroid reference range'' of FT 4 is between 10-28 pmol/l. The ''euthyroid range'' of FT 3 extended from 4.6 to 9.7 pmol/l; median 6.63 pmol/l. The distribution of the readings was likewise log normal. The values of FT 4 and FT 3 are not significantly influenced by TBG concentration anomalies in otherwise healthy thyroid patients. For purposes of discrimination between euthyroidism and hyperthyroidism, FT 3 (95%) and FT 4 (90%) are better suited than the corresponding quotients for the free hormone fraction or the total hormone concentrations. On the other hand, the free hormone parameters are less suitable for the diagnosis of hypothyroidism. These results were deduced theoretically from mathematical function analyses between the TBG-independent free hormone parameters and the TBG-dependent hormone concentrations. (orig.) [de

  1. FTIR, FT-Raman, FT-NMR and quantum chemical investigations of 3-acetylcoumarin

    Science.gov (United States)

    Arjunan, V.; Sakiladevi, S.; Marchewka, M. K.; Mohan, S.

    2013-05-01

    3-Acetylcoumarin (3AC) was synthesised by a Knoevenagel reaction. Conformational analysis using the B3LYP method was also carried out to determine the most stable conformation of the compound. FTIR and FT-Raman spectra of 3AC have been recorded in the range 4000-400 and 4000-100 cm-1, respectively. 1H and 13C NMR spectra have also been recorded. The complete vibrational assignment and analysis of the fundamental modes of the compound were carried out using the experimental FTIR and FT-Raman data and quantum mechanical studies. The experimental vibrational frequencies were compared with the wavenumbers obtained theoretically from the DFT-B3LYP/B3PW91 gradient calculations employing the standard 6-31G**, high level 6-311++G** and cc-pVTZ basis sets for optimised geometry of the compound. The frontier molecular orbital energies of the compound are determined by DFT method.

  2. FT-IR, FT-Raman spectra and DFT calculations of melaminium perchlorate monohydrate

    Science.gov (United States)

    Kanagathara, N.; Marchewka, M. K.; Drozd, M.; Renganathan, N. G.; Gunasekaran, S.; Anbalagan, G.

    2013-08-01

    Melaminium perchlorate monohydrate (MPM), an organic material has been synthesized by slow solvent evaporation method at room temperature. Powder X-ray diffraction analysis confirms that MPM crystal belongs to triclinic system with space group P-1. FTIR and FT Raman spectra are recorded at room temperature. Functional group assignment has been made for the melaminium cations and perchlorate anions. Vibrational spectra have also been discussed on the basis of quantum chemical density functional theory (DFT) calculations using Firefly (PC GAMESS) version 7.1 G. Vibrational frequencies are calculated and scaled values are compared with experimental values. The assignment of the bands has been made on the basis of the calculated PED. The Mulliken charges, HOMO-LUMO orbital energies are analyzed directly from Firefly program log files and graphically illustrated. HOMO-LUMO energy gap and other related molecular properties are also calculated. The theoretically constructed FT-IR and FT-Raman spectra of MPM coincide with the experimental one. The chemical structure of the compound has been established by 1H and 13C NMR spectra. No detectable signal was observed during powder test for second harmonic generation.

  3. No further gravitational wave modes in F(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Bamba, Kazuharu, E-mail: bamba@kmi.nagoya-u.ac.jp [Kobayashi–Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602 (Japan); Capozziello, Salvatore, E-mail: capozziello@na.infn.it [Kobayashi–Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602 (Japan); Dipartimento di Fisica, Università di Napoli “Federico II” (Italy); INFN Sez. di Napoli, Compl. Univ. di Monte S. Angelo, Edificio G, Via Cinthia, I-80126 Napoli (Italy); De Laurentis, Mariafelicia, E-mail: felicia@na.infn.it [Kobayashi–Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602 (Japan); Dipartimento di Fisica, Università di Napoli “Federico II” (Italy); INFN Sez. di Napoli, Compl. Univ. di Monte S. Angelo, Edificio G, Via Cinthia, I-80126 Napoli (Italy); Nojiri, Shin' ichi, E-mail: nojiri@phys.nagoya-u.ac.jp [Kobayashi–Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602 (Japan); Department of Physics, Nagoya University, Nagoya 464-8602 (Japan); Sáez-Gómez, Diego, E-mail: diego.saezgomez@uct.ac.za [Kobayashi–Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602 (Japan); Astrophysics, Cosmology and Gravity Centre (ACGC) and Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, Cape Town (South Africa); Fisika Teorikoaren eta Zientziaren Historia Saila, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao (Spain)

    2013-11-25

    We explore the possibility of further gravitational wave modes in F(T) gravity, where T is the torsion scalar in teleparallelism. It is explicitly demonstrated that gravitational wave modes in F(T) gravity are equivalent to those in General Relativity. This result is achieved by calculating the Minkowskian limit for a class of analytic function of F(T). This consequence is also confirmed by the preservative analysis around the flat background in the weak field limit with the scalar–tensor representation of F(T) gravity.

  4. McVittie solution in f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Bejarano, Cecilia; Jose Guzman, Maria [Instituto de Astronomia y Fisica del Espacio (IAFE, CONICET-UBA), Buenos Aires (Argentina); Ferraro, Rafael [Instituto de Astronomia y Fisica del Espacio (IAFE, CONICET-UBA), Buenos Aires (Argentina); Universidad de Buenos Aires, Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Buenos Aires (Argentina)

    2017-12-15

    We show that McVittie geometry, which describes a black hole embedded in a FLRW universe, not only solves the Einstein equations but also remains as a non-deformable solution of f(T) gravity. This search for GR solutions that survive in f(T) gravity is facilitated by a null tetrad approach. We also show that flat FLRW geometry is a consistent solution of f(T) dynamical equations not only for T = -6H{sup 2} but also for T = 0, which could be a manifestation of the additional degrees of freedom involved in f(T) theories. (orig.)

  5. McVittie solution in f(T) gravity

    International Nuclear Information System (INIS)

    Bejarano, Cecilia; Jose Guzman, Maria; Ferraro, Rafael

    2017-01-01

    We show that McVittie geometry, which describes a black hole embedded in a FLRW universe, not only solves the Einstein equations but also remains as a non-deformable solution of f(T) gravity. This search for GR solutions that survive in f(T) gravity is facilitated by a null tetrad approach. We also show that flat FLRW geometry is a consistent solution of f(T) dynamical equations not only for T = -6H 2 but also for T = 0, which could be a manifestation of the additional degrees of freedom involved in f(T) theories. (orig.)

  6. No further gravitational wave modes in F(T) gravity

    International Nuclear Information System (INIS)

    Bamba, Kazuharu; Capozziello, Salvatore; De Laurentis, Mariafelicia; Nojiri, Shin'ichi; Sáez-Gómez, Diego

    2013-01-01

    We explore the possibility of further gravitational wave modes in F(T) gravity, where T is the torsion scalar in teleparallelism. It is explicitly demonstrated that gravitational wave modes in F(T) gravity are equivalent to those in General Relativity. This result is achieved by calculating the Minkowskian limit for a class of analytic function of F(T). This consequence is also confirmed by the preservative analysis around the flat background in the weak field limit with the scalar–tensor representation of F(T) gravity

  7. Measurement of serum FT3 and FT4 in patients with chronic renal failure and its clinical significance

    International Nuclear Information System (INIS)

    Tan Qingling; Zhang Hui

    2003-01-01

    Objective: To investigate the changes of thyroid hormones in patients with chronic renal failure (CRF) and it's clinical significance. Methods: FT 3 , FT 4 and TSH levels were measured with radioimmunoassay for 42 CRF patients (42 CRF patients were subdivided into uremia and azotemia) and 18 cases of renal disease patients with a normal renal function. Results: Levels of FT 3 , FT 4 and TSH in uremia group and azotemia group were significantly lower than that of normal renal function group (P 3 , FT 4 and TSH in uremia group were remarkably lower than azotemia group (P 3 , FT 4 in patients with CRF can reflect the severity of renal function damage, and can also be an important prognosis index

  8. [Effect of selenium on serum TGAb, TMAb, FT3, FT4 and TSH of rats with excessive intake of iodine].

    Science.gov (United States)

    Chi, Haiyan; Zhou, Yuping; Li, Li

    2012-07-01

    To investigate the effect of selenium on the TGAb, TMAb, FT3, FT4 and TSH level of rats with excessive intake of iodine. Wistar rats were divided into three groups by random:normal control, high iodine group and high iodine plus selenium group. Rats in the high iodine plus selenium group were lavaged with sodium selenite for 10 weeks. The levels of serum TGAb, TMAb, FT3, FT4 and TSH were tested at different time of the experiment. There were no significant change on levels of FT3, FT4 and TSH (P > 0.05). The levels of TGAb and TMAb in the high iodine group were increased slowly (P iodine plus selenium group. Excessive intake of iodine might induce goiter, and selenium might have antagonistic effect on it.

  9. Res Publica lükkas tagasi Isamaaliidu ühinemisettepaneku / Mirko Ojakivi

    Index Scriptorium Estoniae

    Ojakivi, Mirko

    2005-01-01

    Kuigi Res Publica juhid lükkasid tagasi idee ühineda Isamaaliiduga, on Res Publica valmis koostööks nii Isamaaliidu kui ka kõigi teiste erakondadega. Res Publica parlamendifraktsiooni esimehe Marko Pomerantsi arvamus

  10. Isamaa ja Res Publica Liidu plaan / Juhan Parts

    Index Scriptorium Estoniae

    Parts, Juhan, 1966-

    2008-01-01

    Ilmunud ka: Eesti Eest = Za Estoniju : Izdanije objedinenija "Sojuz Otetshestva i Res Publica" 15. mai 2008, lk. 4-5. Eesti majanduse uutest ülesannetest. Kommenteerib: Mart Laar. Vt. samas: IRL-i ettepanekud koalitsioonileppe täienduseks

  11. Comentário sobre as Res Gestae Divi Avgvsti

    Directory of Open Access Journals (Sweden)

    Maria Luiza Corassin

    2004-12-01

    Full Text Available This article studies an epigraphic source, Augustus's Res gestae, which provides elements that elucidate the construction of the imperial power system and the relationship between ruler and ruled.

  12. Comment rendre les villes plus sûres

    International Development Research Centre (IDRC) Digital Library (Canada)

    qui travaillent à l'initiative Villes sûres et inclusives font la lumière sur ce qui fonctionne – et ne fonctionne pas – pour rendre les villes plus sûres. Le présent compte rendu comporte certains enseignements tirés de leur travail, ainsi que les lacunes dans les connaissances et les domaines où il faut poursuivre la recherche.

  13. Quark stars in f(T, T)-gravity

    Energy Technology Data Exchange (ETDEWEB)

    Pace, Mark; Said, Jackson Levi [University of Malta, Department of Physics, Msida (Malta); University of Malta, Institute of Space Sciences and Astronomy, Msida (Malta)

    2017-02-15

    We derive a working model for the Tolman-Oppenheimer-Volkoff equation for quark star systems within the modified f(T, T)-gravity class of models. We consider f(T, T)-gravity for a static spherically symmetric space-time. In this instance the metric is built from a more fundamental tetrad vierbein from which the metric tensor can be derived. We impose a linear f(T) parameter, namely taking f = αT(r) + βT(r) + φ and investigate the behaviour of a linear energy-momentum tensor trace, T. We also outline the restrictions which modified f(T, T)-gravity imposes upon the coupling parameters. Finally we incorporate the MIT bag model in order to derive the mass-radius and mass-central density relations of the quark star within f(T, T)-gravity. (orig.)

  14. Tuition reduction is the key factor determining tax burden of graduate students under the Tax Cuts and Job Act [version 2; referees: 2 approved

    Directory of Open Access Journals (Sweden)

    Patricia M. Lawston

    2018-02-01

    Full Text Available Background: The proposed Tax Cuts and Jobs Act (H.R.1 has stirred significant public debate on the future of American economics.  While supporters of the plan have championed it as a necessity for economic revitalization, detractors have pointed out areas of serious concern, particularly for low- and middle-income Americans.  One particularly alarming facet of the plan is the radical change to education finance programs and taxation of students in higher education.  Methods:  By analyzing actual income and tuition of a public and a private university student, as well as the ‘average’ graduate student, we investigated the effect of both the House and Senate versions of H.R. 1 on taxation of students of various family structures.  Results:  Our findings indicate that taxable tuition would be the greatest contributor to graduate student tax burden across all four categories of filing status.  However, when tuition reduction is upheld or a student is on sustaining fees rather than full tuition, graduate students would realize decreases in taxation. Conclusions:  Overall, we conclude that removal of tuition reduction would result in enormous tax burdens for graduate students and their families and that these effects are dependent not only on the status of the student in their degree program but also on their tuition and stipend, and therefore the institution they attend.

  15. Evaluation of Turmeric Powder Adulterated with Metanil Yellow Using FT-Raman and FT-IR Spectroscopy

    Directory of Open Access Journals (Sweden)

    Sagar Dhakal

    2016-05-01

    Full Text Available Turmeric powder (Curcuma longa L. is valued both for its medicinal properties and for its popular culinary use, such as being a component in curry powder. Due to its high demand in international trade, turmeric powder has been subject to economically driven, hazardous chemical adulteration. This study utilized Fourier Transform-Raman (FT-Raman and Fourier Transform-Infra Red (FT-IR spectroscopy as separate but complementary methods for detecting metanil yellow adulteration of turmeric powder. Sample mixtures of turmeric powder and metanil yellow were prepared at concentrations of 30%, 25%, 20%, 15%, 10%, 5%, 1%, and 0.01% (w/w. FT-Raman and FT-IR spectra were acquired for these mixture samples as well as for pure samples of turmeric powder and metanil yellow. Spectral analysis showed that the FT-IR method in this study could detect the metanil yellow at the 5% concentration, while the FT-Raman method appeared to be more sensitive and could detect the metanil yellow at the 1% concentration. Relationships between metanil yellow spectral peak intensities and metanil yellow concentration were established using representative peaks at FT-Raman 1406 cm−1 and FT-IR 1140 cm−1 with correlation coefficients of 0.93 and 0.95, respectively.

  16. FTIR, FT-Raman, FT-NMR and quantum chemical investigations of 3-acetylcoumarin.

    Science.gov (United States)

    Arjunan, V; Sakiladevi, S; Marchewka, M K; Mohan, S

    2013-05-15

    3-Acetylcoumarin (3AC) was synthesised by a Knoevenagel reaction. Conformational analysis using the B3LYP method was also carried out to determine the most stable conformation of the compound. FTIR and FT-Raman spectra of 3AC have been recorded in the range 4000-400 and 4000-100 cm(-1), respectively. (1)H and (13)C NMR spectra have also been recorded. The complete vibrational assignment and analysis of the fundamental modes of the compound were carried out using the experimental FTIR and FT-Raman data and quantum mechanical studies. The experimental vibrational frequencies were compared with the wavenumbers obtained theoretically from the DFT-B3LYP/B3PW91 gradient calculations employing the standard 6-31G(**), high level 6-311++G(**) and cc-pVTZ basis sets for optimised geometry of the compound. The frontier molecular orbital energies of the compound are determined by DFT method. Copyright © 2013 Elsevier B.V. All rights reserved.

  17. The Language of the Internet – The Use of Concessive Conjunctions in Blogs by Companies Providing Private Tuition

    OpenAIRE

    Jindřiška Kraťkova

    2017-01-01

    Concessions are said to be a key aspect of English semantics because concessive constructions create a place for contrast, i.e. contradicting relations. Several studies have been carried out on this topic (i.e. on the positioning of conjunctions, linguistic interference, etc.). The aim of this paper is to focus on the frequency of use of the most common concessive conjunctions in Internet discussions with native speakers who give private tuition. The focus is primarily on the main, most commo...

  18. The student and the ovum: The lack of autonomy and informed consent in trading genes for tuition

    Directory of Open Access Journals (Sweden)

    Papadimos Alexa T

    2004-07-01

    Full Text Available Abstract Rising tuition costs have forced university students to become creative in finding ways to fund their education. Some female university students have decided that ova donation may be an acceptable alternative in which to pay for their tuition. This alternative presents itself because of the insufficient number of ova available for assisted reproduction and emerging stem cell technologies. Young female university students are encouraged by Internet sources and respectable electronic and print media to donate their ova in the cause of assisted reproduction for monetary compensation. While university students generally exhibit autonomy, the constraining influence of their financial predicament compromises the elements of informed consent (voluntariness, competence, capacity, understanding, and disclosure as to their making an autonomous decision in regard to egg donation. Thus, any moral possibility of giving informed consent is negated. Informed consent can only occur through autonomy. A female university student in need of financial resources to pay for her education cannot make an autonomous choice to trade her genes for tuition. Donated ova are not only needed for assisted reproduction, but for stem cell technologies. While the long-term health of women who donate their ova is of concern (a potential risk of cancer after long term use of ovulation induction, of equal concern is the possibility of a growth in the trade of ova targeting third world and Eastern European women where the precedence for autonomy and informed consent is not well established.

  19. Spherically symmetric static spacetimes in vacuum f(T) gravity

    International Nuclear Information System (INIS)

    Ferraro, Rafael; Fiorini, Franco

    2011-01-01

    We show that Schwarzschild geometry remains as a vacuum solution for those four-dimensional f(T) gravitational theories behaving as ultraviolet deformations of general relativity. In the gentler context of three-dimensional gravity, we also find that the infrared-deformed f(T) gravities, like the ones used to describe the late cosmic speed up of the Universe, have as the circularly symmetric vacuum solution a Deser-de Sitter or a Banados, Teitelboim and Zanelli-like spacetime with an effective cosmological constant depending on the infrared scale present in the function f(T).

  20. Noether symmetry approach in f(T, B) teleparallel cosmology

    Energy Technology Data Exchange (ETDEWEB)

    Bahamonde, Sebastian [University College London, Department of Mathematics, London (United Kingdom); Capozziello, Salvatore [Universita di Napoli ' ' Federico II' ' , Dipartimento di Fisica, Naples (Italy); Gran Sasso Science Institute, L' Aquila (Italy); Compl. Univ. di Monte S. Angelo, Naples (Italy); INFN, Napoli (Italy)

    2017-02-15

    We consider the cosmology derived from f(T, B) gravity where T is the torsion scalar and B = (2)/(e)∂{sub μ}(eT{sup μ}) a boundary term. In particular we discuss how it is possible to recover, under the same standard, the teleparallel f(T) gravity, the curvature f(R) gravity, and the teleparallel-curvature f(R, T) gravity, which are particular cases of f(T, B). We adopt the Noether Symmetry Approach to study the related dynamical systems and to find cosmological solutions. (orig.)

  1. Static solutions with spherical symmetry in f(T) theories

    International Nuclear Information System (INIS)

    Wang Tower

    2011-01-01

    The spherically symmetric static solutions are searched for in some f(T) models of gravity theory with a Maxwell term. To do this, we demonstrate that reconstructing the Lagrangian of f(T) theories is sensitive to the choice of frame, and then we introduce a particular frame based on the conformally Cartesian coordinates. In this particular frame, the existence conditions of various solutions are presented. Our results imply that only a limited class of f(T) models can be solved in this frame. For more general models, the search for spherically symmetric static solutions is still an open and challenging problem, hopefully solvable in other frames.

  2. Effects of rising tuition fees on medical school class composition and financial outlook.

    Science.gov (United States)

    Kwong, Jeff C; Dhalla, Irfan A; Streiner, David L; Baddour, Ralph E; Waddell, Andrea E; Johnson, Ian L

    2002-04-16

    Since 1997, tuition has more than doubled at Ontario medical schools but has remained relatively stable in other Canadian provinces. We sought to determine whether the increasing tuition fees in Ontario affected the demographic characteristics and financial outlook of medical students in that province as compared with those of medical students in the rest of Canada. As part of a larger Internet survey of all students at Canadian medical schools outside Quebec, conducted in January and February 2001, we compared the respondents from Ontario schools with those from the other schools (control group). Respondents were asked about their age, sex, self-reported family income (as a direct indicator of socioeconomic status), the first 3 digits of their postal code at graduation from high school (as an indirect indicator of socioeconomic status), and importance of financial considerations in choosing a specialty and location of practice. We used logistic regression models to see if temporal changes (1997 v. 2000) among Ontario medical students differed from those among medical students elsewhere in Canada apart from Quebec. Responses were obtained from 2994 (68.5%) of 4368 medical students. Across the medical schools, there was an increase in self-reported family income between 1997 and 2000 (p = 0.03). In Ontario, the proportion of respondents with a family income of less than $40,000 declined from 22.6% to 15.0%. However, compared with the control respondents, the overall rise in family income among Ontario students was not statistically significant. First-year Ontario students reported higher levels of expected debt at graduation than did graduating students (median $80,000 v. $57,000) (p financial situation was "very" or "extremely" stressful and to cite financial considerations as having a major influence on specialty choice or practice location. These differences were not observed in the control group. At Canadian medical schools, there are fewer students from low

  3. Electricity market models and RES integration: The Greek case

    International Nuclear Information System (INIS)

    Simoglou, Christos K.; Biskas, Pandelis N.; Vagropoulos, Stylianos I.; Bakirtzis, Anastasios G.

    2014-01-01

    This paper presents an extensive analysis of the Greek electricity market for the next 7-year period (2014–2020) based on an hour-by-hour simulation considering five different RES technologies, namely wind, PV, small hydro, biomass and CHP with emphasis on PV integration. The impact of RES penetration on the electricity market operation is evaluated under two different models regarding the organization of the Greek wholesale day-ahead electricity market: a mandatory power pool for year 2014 (current market design) and a power exchange for the period 2015–2020 (Target Model). An integrated software tool is used for the simulation of the current and the future day-ahead market clearing algorithm of the Greek wholesale electricity market. Simulation results indicate the impact of the anticipated large-scale RES integration, in conjunction with each market model, on specific indicators of the Greek electricity market in the long-term. - Highlights: • Analysis of the Greek electricity market for the next 7-year period (2014–2020) based on hour-by-hour simulation. • Five different RES technologies are considered with emphasis on PV integration. • A power pool (for 2014) and a power exchange (for 2015–2020) are considered. • Various market indicators are used for the analysis of the impact of the RES integration on the Greek electricity market. • Two alternative tariff schemes for the compensation of the new ground-mounted PV units from 2015 onwards are investigated

  4. Data Sources for NetZero Ft Carson Model

    Data.gov (United States)

    U.S. Environmental Protection Agency — Table of values used to parameterize and evaluate the Ft Carson NetZero integrated Model with published reference sources for each value. This dataset is associated...

  5. Contours - MO 2012 Greene County 5ft Contours (SHP)

    Data.gov (United States)

    NSGIC State | GIS Inventory — 5ft cartographic contour file for Greene County, Missouri. This file was created using the elevation data from the 2011 LiDAR flight. It includes indexes for 10, 25,...

  6. Mapping Discrimination Experienced by Indonesian Trans* FtM Persons.

    Science.gov (United States)

    Gordon, Danny; Pratama, Mario Prajna

    2017-01-01

    This work sought to document how Indonesian trans* FtM persons experienced discrimination across the interlinked domains of social networks, religious and educational institutions, employment and the workplace, and health care institutions. Objectives were (1) to map the discrimination experienced by trans* FtM individuals in Indonesia, and (2) to establish the specific priorities of the Indonesian trans* FtM community. In-depth interviews, focus groups, and participant observation was used involving 14 respondents. Findings revealed that respondents experienced othering through rejection, misidentification, harassment, "correction," and bureaucratic discrimination across the five preestablished domains. Health care and a lack of information emerged as areas of particular concern for respondents. This work calls for health care that is sensitive to the needs of trans* FtM people coupled with high-quality information to alleviate the cycles through which discrimination is sustained.

  7. Characterization of Momordica charantia Ussing FT-IR Spectroscopy

    Directory of Open Access Journals (Sweden)

    Attila Keseru

    2016-11-01

    In this paper, because earlier claim shows that the plant used as stomachic, carminative, tonic, antipyretic, antidiabetic, in rheumatoid arthritis and gout, the present investigation was carried to characterized a principal components of plant using FT-IR technique

  8. New static solutions in f(T) theory

    Energy Technology Data Exchange (ETDEWEB)

    Daouda, M.H.; Rodrigues, Manuel E. [Universidade Federal do Espirito Santo, Centro de Ciencias Exatas, Departamento de Fisica, Vitoria, ES (Brazil); Houndjo, M.J.S. [Universidade Federal da Bahia, Instituto de Fisica, Salvador, BA (Brazil)

    2011-11-15

    We consider the equations of motion of an anisotropic space-time in f(T) theory, where T is the torsion. New spherically symmetric solutions of black holes and wormholes are obtained with a constant torsion and for the cases for which the radial pressure is proportional to a real constant, to some algebraic functions f(T) and their derivatives f{sub T}(T), or vanishes identically. (orig.)

  9. A review of the FT distillate pathway in GHGenius

    International Nuclear Information System (INIS)

    2006-01-01

    Fischer-Tropsch (FT) distillates products are now used throughout the world as a commercial fuel. However, lifecycle greenhouse gas (GHG) emissions from FT distillates fuels are higher than diesel fuel produced from crude oil. This paper provided details of a lifecycle analysis of FT distillates pathways created for GHGenius, a model used to analyze emissions from a variety of combustion sources. The study examined values reported in tests conducted by major oil and gas operators and described the conversion technologies typically used at FT distillates production facilities. Summaries of reports on FT distillates emissions were also provided. Three primary factors were identified that contributed to different results reported for FT distillates emissions: (1) the efficiency of the conversion process; (2) the allocation procedure used in the conventional oil refinery for the emissions of individual products; and (3) the emissions associated with natural gas production. The GHGenius model was used to quantify the impact of the 3 main factors. An alternative system expansion methodology was used to compare crude oil diesel pathways with a high efficiency, low gas leak scenario in order to achieve high values reported by some oil and gas operators. 5 refs., 5 tabs., 5 figs

  10. Radiotherapy combined with Tegafur (FT-207s) for brain tumors

    International Nuclear Information System (INIS)

    Aoki, Yoshiro

    1981-01-01

    5-Fluorouracil (5-FU) has anti-tumor effects as an anti-metabolite, but it cannot pass the Blood-Brain-Barrier (BBB). FT-207 a masked-compound of 5-FU, is easily lipid soluble and is able to pass the BBB. Twenty eight patients of primary brain tumor and 8 patients of metastatic brain tumor were treated with irradiation combined with 750 mg of FT-207 suppository. Twenty four patients of primary brain tumor were treated only with irradiation as control. The mean survival time was 20.4 +- 11.8 months for the combined therapy group and 17.6 +- 8.6 months for the control. The concentration of FT-207 and 5-FU in serum and in cerebrospinal fluid (CSF) was investigated after administration of 750 mg of FT-207 suppository per annum. The maximum concentration of FT-207 and of 5-FU in serum was 20.4 +- 11.8 mcg/ml and 0.06 +- 0.02 mcg/ml, respectively. There were observed several side effects, such as anorexia, nausea, exanthema and etc. These side effects were not so great as to interrupt the therapy at the dose level of 750 mg of FT-207. However, at the dose of 1500 mg, one case showed disturbance of consciousness, to which attention should be called. (author)

  11. Intricate Resonant Raman Response in Anisotropic ReS2.

    Science.gov (United States)

    McCreary, Amber; Simpson, Jeffrey R; Wang, Yuanxi; Rhodes, Daniel; Fujisawa, Kazunori; Balicas, Luis; Dubey, Madan; Crespi, Vincent H; Terrones, Mauricio; Hight Walker, Angela R

    2017-10-11

    The strong in-plane anisotropy of rhenium disulfide (ReS 2 ) offers an additional physical parameter that can be tuned for advanced applications such as logic circuits, thin-film polarizers, and polarization-sensitive photodetectors. ReS 2 also presents advantages for optoelectronics, as it is both a direct-gap semiconductor for few-layer thicknesses (unlike MoS 2 or WS 2 ) and stable in air (unlike black phosphorus). Raman spectroscopy is one of the most powerful characterization techniques to nondestructively and sensitively probe the fundamental photophysics of a 2D material. Here, we perform a thorough study of the resonant Raman response of the 18 first-order phonons in ReS 2 at various layer thicknesses and crystal orientations. Remarkably, we discover that, as opposed to a general increase in intensity of all of the Raman modes at excitonic transitions, each of the 18 modes behave differently relative to each other as a function of laser excitation, layer thickness, and orientation in a manner that highlights the importance of electron-phonon coupling in ReS 2 . In addition, we correct an unrecognized error in the calculation of the optical interference enhancement of the Raman signal of transition metal dichalcogenides on SiO 2 /Si substrates that has propagated through various reports. For ReS 2 , this correction is critical to properly assessing the resonant Raman behavior. We also implemented a perturbation approach to calculate frequency-dependent Raman intensities based on first-principles and demonstrate that, despite the neglect of excitonic effects, useful trends in the Raman intensities of monolayer and bulk ReS 2 at different laser energies can be accurately captured. Finally, the phonon dispersion calculated from first-principles is used to address the possible origins of unexplained peaks observed in the Raman spectra, such as infrared-active modes, defects, and second-order processes.

  12. Determination of serum free thyroxine concentration (FT4) by means of fT4-fraction and total thyroxine concentration

    International Nuclear Information System (INIS)

    Passath, A.; Leb, G.

    1985-01-01

    A new equilibrium assay for the determination of serum free thyroxine was evaluated in 514 patients. The assay comprises a two-vial-procedure to measure total thyroxine and free thyroxine fraction by use of monoclonal antibodies. Free thyroxine concentrations are calculated from fT 4 -fraction and total thyroxine concentration readings. In euthyroidism the average free thyroxine fraction (%fT 4 ) was 0.011%, in hyperthyroidism this fraction was elevated, in hypothyroidism it was below normal. In patients with TBG anomalies, TBG values were inversely correlated with fT 4 fraction readings. The 'euthyroid reference range' of FT 4 (SPAC ET) was between 0.70 to 1.78ng/dl. This euthyroid range of FT 4 was determined from TT 4 concentrations measured by T 4 -RIA (SPAC T 4 MONO) which were 30% above TT 4 values measured by conventional T 4 -RIA (SPAC T 4 POLY; polyclonal antibodies). However, a different euthyroid range of FT 4 between 0.55 to 1.30 ng/dl was observed as well as by other investigators when conventional T 4 -RIA measurements were used for calculation of FT 4 values. Our results indicate that calculated FT 4 concentration values are highly dependent on the methods used for determination of total thyroxine concentrations. Precision and reproducability of this two vial equilibrium assay did not meet the requirements mandatory for the application as a clinical routine diagnostic procedure, and its general use for this purpose can as yet not be recommended. (Author)

  13. FT-Raman and FT-Infrared investigations of archaeological artefacts from Foeni Neolithic site (Banat, Romania)

    OpenAIRE

    Simona Cîntă Pînzaru; Dana Pop; Loredana Nemeth

    2008-01-01

    An impressive collection of chert artefacts from the Foeni Neolithic archaeological site (Timiş County, Banat region, Romania) is hosted by the Banat Museum in Timişoara. A representative set of seven specimens was non-destructively investigated using FT-Raman and ATR-FT-IR spectroscopy. The research was carried out for checking if these readily-available, non-destructive, fast, and cheap methods, which do not require preliminary sample preparation could provide significant information for ch...

  14. A Study of Teacher Stereotypes: How Do Tuition-Free Teacher Candidates and General Undergraduates Think about Middle School and University Teachers in China?

    Science.gov (United States)

    Zuo, Youxia; Zhao, Yufang; Peng, Chunhua; Chen, Youguo

    2017-01-01

    A tuition-free teacher candidate is an undergraduate who receives tuition-free teacher education and must work as a teacher in a middle school after their graduation. Tuition-free candidates are of the focus of many researchers; however, no study reports how tuition-free teacher candidates think about teachers. The present study explored stereotypes about middle school and university teachers held by teacher candidates. Specifically, we looked for the differences between the stereotypes held by the teacher candidates and general undergraduates. This study attempted to provide a potential tool to predict the actual willingness of teacher candidates to work as middle school teachers. University and middle school teachers were evaluated using descriptive phrases or words on a five-point Likert scale by 116 tuition-free teacher candidates and 155 general undergraduates. Exploratory factor analyses revealed a three-factor stereotype model including occupational cognition, occupational personality, and occupational emotion. Compared with general undergraduates, teacher candidates held more positive occupational personality and emotions toward middle school teachers; they held more negative occupational emotions toward university teachers. Further, the undergraduates' willingness to be middle school teachers positively correlated with positive occupational emotions and negatively correlated with negative occupational personality and emotions toward middle school teachers. This supported previous studies that individuals' professional willingness were influenced by their stereotypes about professions. PMID:28469587

  15. A Polychoric Correlation to Identify the Principle Component in Classifying Single Tuition Fee Capabilities on the Students Socio-Economic Database

    Science.gov (United States)

    Yustanti, W.; Anistyasari, Y.

    2018-01-01

    The government has issued the regulation number 55 of 2013 about the enactment of a single tuition fee based on the socio-economic conditions of each student. All public universities are required to implement this policy. Therefore, each university needs to create a formulation that can be used to categorize a student into which cost group. The results of the data collection found that the parameters used to determine the classification of tuition fees between one universities with another are different. In this research, taken a sampling of student data at one public university which is using 43 predictor variables and 8 categories of single tuition. The sample data used are socioeconomic data of students of 2016 and 2017 classes received through public university entrance selections. The results of this study reveal that from 43 variables, there are 16 variables which are the most significant in influencing single tuition category with goodness-of-fit index is 0.866. This value means that the proposed model can indicate student’s ability to pay the tuition fee.

  16. A Study of Teacher Stereotypes: How Do Tuition-Free Teacher Candidates and General Undergraduates Think about Middle School and University Teachers in China?

    Science.gov (United States)

    Zuo, Youxia; Zhao, Yufang; Peng, Chunhua; Chen, Youguo

    2017-01-01

    A tuition-free teacher candidate is an undergraduate who receives tuition-free teacher education and must work as a teacher in a middle school after their graduation. Tuition-free candidates are of the focus of many researchers; however, no study reports how tuition-free teacher candidates think about teachers. The present study explored stereotypes about middle school and university teachers held by teacher candidates. Specifically, we looked for the differences between the stereotypes held by the teacher candidates and general undergraduates. This study attempted to provide a potential tool to predict the actual willingness of teacher candidates to work as middle school teachers. University and middle school teachers were evaluated using descriptive phrases or words on a five-point Likert scale by 116 tuition-free teacher candidates and 155 general undergraduates. Exploratory factor analyses revealed a three-factor stereotype model including occupational cognition, occupational personality, and occupational emotion. Compared with general undergraduates, teacher candidates held more positive occupational personality and emotions toward middle school teachers; they held more negative occupational emotions toward university teachers. Further, the undergraduates' willingness to be middle school teachers positively correlated with positive occupational emotions and negatively correlated with negative occupational personality and emotions toward middle school teachers. This supported previous studies that individuals' professional willingness were influenced by their stereotypes about professions.

  17. FT-Raman and FT-IR studies of 1:2.5 piroxicam: β-cyclodextrin inclusion compound

    Science.gov (United States)

    Bertoluzza, A.; Rossi, M.; Taddei, P.; Redenti, E.; Zanol, M.; Ventura, P.

    1999-05-01

    The FT-Raman and FT-IR spectra of amorphous 1:2.5 piroxicam (P): β-cyclodextrin (βCD) inclusion compound (PβCD) are presented and discussed in comparison with the spectra of the three main modifications of piroxicam (α,β and monohydrate). In the 1700-1200 cm -1 FT-Raman spectrum of 1:2.5 PβCD inclusion compound the bands of βCD are weak and covered by those stronger of piroxicam, differently from the FT-IR spectrum where the bands of βCD are stronger, so covering a large part of the spectrum. Typical FT-Raman marker bands are assigned for the characterization of the three modifications of piroxicam. The FT-Raman spectrum of 1:2.5 PβCD inclusion compound predominantly shows the bands at about 1465 and 1400 cm -1 of the monohydrate, indicating that piroxicam assumes the zwitterionic structure stabilized by interaction with βCD via electrostatic and hydrogen bonds. The dipolar character of 1:2.5 PβCD inclusion compound improves the solubility and the dissolution rate of piroxicam and thus its rate of absorption.

  18. Phase portraits of general f(T) cosmology

    Science.gov (United States)

    Awad, A.; El Hanafy, W.; Nashed, G. G. L.; Saridakis, Emmanuel N.

    2018-02-01

    We use dynamical system methods to explore the general behaviour of f(T) cosmology. In contrast to the standard applications of dynamical analysis, we present a way to transform the equations into a one-dimensional autonomous system, taking advantage of the crucial property that the torsion scalar in flat FRW geometry is just a function of the Hubble function, thus the field equations include only up to first derivatives of it, and therefore in a general f(T) cosmological scenario every quantity is expressed only in terms of the Hubble function. The great advantage is that for one-dimensional systems it is easy to construct the phase space portraits, and thus extract information and explore in detail the features and possible behaviours of f(T) cosmology. We utilize the phase space portraits and we show that f(T) cosmology can describe the universe evolution in agreement with observations, namely starting from a Big Bang singularity, evolving into the subsequent thermal history and the matter domination, entering into a late-time accelerated expansion, and resulting to the de Sitter phase in the far future. Nevertheless, f(T) cosmology can present a rich class of more exotic behaviours, such as the cosmological bounce and turnaround, the phantom-divide crossing, the Big Brake and the Big Crunch, and it may exhibit various singularities, including the non-harmful ones of type II and type IV. We study the phase space of three specific viable f(T) models offering a complete picture. Moreover, we present a new model of f(T) gravity that can lead to a universe in agreement with observations, free of perturbative instabilities, and applying the Om(z) diagnostic test we confirm that it is in agreement with the combination of SNIa, BAO and CMB data at 1σ confidence level.

  19. Clinical significance of changes of serum FT3, FT4 and SIL-2R levels after treatment in patients with hyperthyroidism

    International Nuclear Information System (INIS)

    Ye Qing

    2008-01-01

    Objective: To explore the clinical significance of changes of serum FT 3 , FT 4 , SIL-2R levels after treatment in patients with hyperthyroidism. Methods: Serum FT 3 , FT 4 , TSH (with RIA) and SIL-2R (with ELISA) levels were measured in 55 patients with hyperthyroidism both before and after treatment as well as in 35 controls. Results: Before treatment, in the patients the serum FT 3 , FT 4 , SIL-2R levels were significantly higher than those in the controls (P 3 , FT 4 , SIL-2 levels were not significantly different from those in controls (P>0.05). Conclusion: Detection of serum FT 3 , FT 4 , SIL-2R levels is valuable for treatment outcome prediction in patients with hyperthyroidism. (authors)

  20. Reinsalu : Res Publica lisab kiirust / Urmas Reinsalu ; interv. Lauri Tankler

    Index Scriptorium Estoniae

    Reinsalu, Urmas, 1975-

    2004-01-01

    Ilmunud ka: Võta Võim : na russkom jazõke, 28. apr. 2004, lk. 4. Res Publica esikandidaat Urmas Reinsalu erakonna valimiskampaania eesmärkidest, võimalustest nende eesmärkide saavutamiseks ja erakonna valimisprogrammi ning kandidaatide eelistest konkurentide ees

  1. Resúmenes Presentaciones de Pósteres

    Directory of Open Access Journals (Sweden)

    Editor Gabriel Vargas Arana

    2015-12-01

    Full Text Available En este artículo se pueden encontrar los resúmenes de las presentaciones de pósteres del III Congreso Latinoamericano de Plantas Medicinales, desarrollado del 12 al 14 de agosto de 2015 en la ciudad de Iquitos, Perú.

  2. Medical negligence and res ipsa loquitur in South Africa | Patel ...

    African Journals Online (AJOL)

    The inter-relationship between Medicine and Law is most commonly brought to the fore by cases involving medical negligence. This relationship needs to protect all parties concerned based on the probability of reasonableness in terms of who performs the act as well as the patient affected by the act in question. The res ...

  3. Pettumus Res Publicas algas kirikus antud vandest / Margus Tsahkna

    Index Scriptorium Estoniae

    Tsahkna, Margus, 1977-

    2005-01-01

    Autori sõnul on Res Publica petnud inimeste põhiväärtustele tuginevaid ootusi, Eesti riik kaugeneb kodanikust ja tema elulistest huvidest. Isamaaliit paneb ette asuda tegelike probleemide lahendamisele ning kutsub erakondi üles kaitsma rahvuslikke huve

  4. Au Cern, premières collisions de protons hier

    CERN Multimedia

    Galeazzi, Juliette

    2009-01-01

    "Hier, les scientifiques du monde entier ont salué le redémarrage du LHC, grand collisionneur de hadrons, au Cern à Genève. Après quatorze mois d'arrêt, à la suite d'une panne, les expériences ont pris et les premières collisions ont eu lieu" (2 pages)

  5. Video-based instructions for surgical hand disinfection as a replacement for conventional tuition? A randomised, blind comparative study.

    Science.gov (United States)

    Weber, Uwe; Constantinescu, Mihai A; Woermann, Ulrich; Schmitz, Felix; Schnabel, Kai

    2016-01-01

    Various different learning methods are available for planning tuition regarding the introduction to surgical hand disinfection. These learning methods should help to organise and deal with this topic. The use of a video film is an alternative to conventional tuition due to the real presentation possibilities of practical demonstration. This study examines by way of comparison which form of communication is more effective for learning and applying surgical hand disinfection for medical students in their first year of studies: video-based instruction or conventional tuition. A total of 50 first-year medical students were randomly allocated either to the "Conventional Instruction" (CI) study group or to the "Video-based Instruction" (VI) study group. The conventional instruction was carried out by an experienced nurse preceptor/nurse educator for the operating theatre who taught the preparatory measures and the actual procedure in a two-minute lesson. The second group watched a two-minute video sequence with identical content. Afterwards, both groups demonstrated practically the knowledge they had acquired at an individual practical test station. The quality (a) of the preparation and (b) of the procedure as well as (c) the quality of the results was assessed by 6 blind experts using a check list. The acceptability of the respective teaching method was also asked about using a questionnaire. The group performance did not differ either in the preparation (t=-78, pvideo-based instruction achieved a significantly better result. In response to the question as to which of the two learning methods they would prefer, the significant majority (60.4%) of students stated video instruction. In this study, the use of the video-based instruction emerged as the more effective teaching method for learning surgical hand disinfection for medical students and is preferable to conventional instruction. The video instruction is associated with a higher learning effectiveness, efficiency

  6. The Language of the Internet – The Use of Concessive Conjunctions in Blogs by Companies Providing Private Tuition

    Directory of Open Access Journals (Sweden)

    Jindřiška Kraťkova

    2017-05-01

    Full Text Available Concessions are said to be a key aspect of English semantics because concessive constructions create a place for contrast, i.e. contradicting relations. Several studies have been carried out on this topic (i.e. on the positioning of conjunctions, linguistic interference, etc.. The aim of this paper is to focus on the frequency of use of the most common concessive conjunctions in Internet discussions with native speakers who give private tuition. The focus is primarily on the main, most commonly used concessive conjunctions in tutoring blogs.

  7. Cosmological viability conditions for f(T) dark energy models

    Energy Technology Data Exchange (ETDEWEB)

    Setare, M.R.; Mohammadipour, N., E-mail: rezakord@ipm.ir, E-mail: N.Mohammadipour@uok.ac.ir [Department of Science, University of Kurdistan, Sanandaj (Iran, Islamic Republic of)

    2012-11-01

    Recently f(T) modified teleparallel gravity where T is the torsion scalar has been proposed as the natural gravitational alternative for dark energy. We perform a detailed dynamical analysis of these models and find conditions for the cosmological viability of f(T) dark energy models as geometrical constraints on the derivatives of these models. We show that in the phase space exists two cosmologically viable trajectory which (i) The universe would start from an unstable radiation point, then pass a saddle standard matter point which is followed by accelerated expansion de sitter point. (ii) The universe starts from a saddle radiation epoch, then falls onto the stable matter era and the system can not evolve to the dark energy dominated epoch. Finally, for a number of f(T) dark energy models were proposed in the more literature, the viability conditions are investigated.

  8. The tuition fee ‘shock’: Analysing the response of first-year students to a spatially discontinuous policy change in Germany

    DEFF Research Database (Denmark)

    Mitze, Timo Friedel; Burgard, Claudia; Alecke, Björn

    2015-01-01

    students. Second, changes in migration behaviour are sensitive to geographical distance. Finally, comparing different types of higher education institutions, we find that the migration effect is larger for universities compared to technical colleges and colleges of arts or music....... variation in tuition fee regimes as a result of a Federal Constitutional Court decision. Our empirical results show that the introduction of tuition fees had a particular impact on student migration. We observe three effects: first, male students show a stronger migration response compared to female...

  9. Violation of causality in f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Otalora, G. [Pontificia Universidad Catolica de Valparaiso, Instituto de Fisica, Valparaiso (Chile); Reboucas, M.J. [Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, RJ (Brazil)

    2017-11-15

    In the standard formulation, the f(T) field equations are not invariant under local Lorentz transformations, and thus the theory does not inherit the causal structure of special relativity. Actually, even locally violation of causality can occur in this formulation of f(T) gravity. A locally Lorentz covariant f(T) gravity theory has been devised recently, and this local causality problem seems to have been overcome. The non-locality question, however, is left open. If gravitation is to be described by this covariant f(T) gravity theory there are a number of issues that ought to be examined in its context, including the question as to whether its field equations allow homogeneous Goedel-type solutions, which necessarily leads to violation of causality on non-local scale. Here, to look into the potentialities and difficulties of the covariant f(T) theories, we examine whether they admit Goedel-type solutions. We take a combination of a perfect fluid with electromagnetic plus a scalar field as source, and determine a general Goedel-type solution, which contains special solutions in which the essential parameter of Goedel-type geometries, m{sup 2}, defines any class of homogeneous Goedel-type geometries. We show that solutions of the trigonometric and linear classes (m{sup 2} < 0 and m = 0) are permitted only for the combined matter sources with an electromagnetic field matter component. We extended to the context of covariant f(T) gravity a theorem which ensures that any perfect-fluid homogeneous Goedel-type solution defines the same set of Goedel tetrads h{sub A}{sup μ} up to a Lorentz transformation. We also showed that the single massless scalar field generates Goedel-type solution with no closed time-like curves. Even though the covariant f(T) gravity restores Lorentz covariance of the field equations and the local validity of the causality principle, the bare existence of the Goedel-type solutions makes apparent that the covariant formulation of f(T) gravity

  10. Astrophysical flows near f(T) gravity black holes

    Energy Technology Data Exchange (ETDEWEB)

    Ahmed, Ayyesha K.; Jamil, Mubasher [National University of Sciences and Technology (NUST), Department of Mathematics, School of Natural Sciences (SNS), Islamabad (Pakistan); Azreg-Ainou, Mustapha [Baskent University, Baglica Campus, Engineering Faculty, Ankara (Turkey); Bahamonde, Sebastian [University College London, Department of Mathematics, London (United Kingdom); Capozziello, Salvatore [Universita di Napoli ' ' Federico II' ' , Dipartimento di Fisica, Naples (Italy); Gran Sasso Science Institute (INFN), L' Aquila (Italy); INFN Sezione di Napoli, Naples (Italy)

    2016-05-15

    In this paper, we study the accretion process for fluids flowing near a black hole in the context of f(T) teleparallel gravity. Specifically, by performing a dynamical analysis by a Hamiltonian system, we are able to find the sonic points. After that, we consider different isothermal test fluids in order to study the accretion process when they are falling onto the black hole. We find that these flows can be classified according to the equation of state and the black hole features. Results are compared in f(T) and f(R) gravity. (orig.)

  11. Organic Scintillator Detector Response Simulations with DRiFT

    Energy Technology Data Exchange (ETDEWEB)

    Andrews, Madison Theresa [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Bates, Cameron Russell [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Mckigney, Edward Allen [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Rising, Michael Evan [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Pinilla, Maria Isabel [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Solomon, Jr., Clell Jeffrey [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Sood, Avneet [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-12-19

    Accurate detector modeling is a requirement to design systems in many non-proliferation scenarios; by determining a Detector’s Response Function (DRF) to incident radiation, it is possible characterize measurements of unknown sources. DRiFT is intended to post-process MCNP® output and create realistic detector spectra. Capabilities currently under development include the simulation of semiconductor, gas, and (as is discussed in this work) scintillator detector physics. Energy spectra and pulse shape discrimination (PSD) trends for incident photon and neutron radiation have been reproduced by DRiFT.

  12. Res Publica tähistab sünnipäeva konverentsiga / Lauri Tankler

    Index Scriptorium Estoniae

    Tankler, Lauri

    2003-01-01

    Ilmunud ka: Võta Võim : na russkom jazõke 3. dets. lk. 3. Res Publica saab 2-aastaseks, mille puhul korraldatakse konverents "Riik ja Res Publica". Vt. samas: Selle aasta veebruaris said kuldmärgid

  13. Res Publica kärbiks võimuorganite koosseise / Argo Ideon

    Index Scriptorium Estoniae

    Ideon, Argo, 1966-

    2002-01-01

    Res Publica taotleb Riigikogu kärpimist 61 liikmeni, lubab kahandada kohalike volikogude koosseise, Tallinna abilinnapeade arvu ja kaotada portfellita ministrite kohad. Vt. samas: Res Publica valimisnimekiri Tallinnas

  14. Res Publica asus Reformierakonda Tallinna võimuliidust tõrjuma / Mirko Ojakivi

    Index Scriptorium Estoniae

    Ojakivi, Mirko

    2005-01-01

    Res Publica Tallinna piirkonna juhatuse liikme Siim Roode sõnul teeb Res Publica Keskerakonna Tallinna piirkonna juhatusele ettepaneku koalitsiooniläbirääkimiste alustamiseks. Lisa: Paltsu ettekäändeks Unicom

  15. Res Publica hakkab kaaluma Kohtla-Järve võimuliidust lahkumist / Erik Gamzejev

    Index Scriptorium Estoniae

    Gamzejev, Erik, 1967-

    2002-01-01

    Ilmunud ka: Severnoje Poberezhje 19. nov. lk. 1. Res Publica eestseisuse ettepanek Kohtla-Järve osakonnale lahkuda koalitsioonist. Osakonna juhatuse otsus esitada Hants Hint volikogu esimehe kandidaadiks. Res Publica liikmete käitumise arutelu aukohtus

  16. Res Publica presidendikandidaatide nimed selguvad neljapäevaks / Rauno Veri, Urmo Kübar

    Index Scriptorium Estoniae

    Veri, Rauno, 1978-

    2006-01-01

    Res Publica, Isamaaliit, Reformierakond, SDE ja Keskerakond otsivad ühist presidendikandidaati, ainsa parlamendierakonnana ei osale läbirääkimistel Rahvaliit. Reformierakonna, SDE presidendikandidaatidest; Res Publica naiskogu ja Väärikate Kogu ühisavaldusest

  17. Sisetülides Res Publica heitis liidu Keskerakonnaga kõrvale / Urmas Seaver

    Index Scriptorium Estoniae

    Seaver, Urmas, 1973-

    2005-01-01

    Res Publica juhatus otsustas toetada senise koalitsiooni jätkamist Tallinnas. Res Publica ja Reformierakonna täiendatud koalitsioonileppest. Reformierakonna Tallinna piirkonna juhi Keit Pentuse hinnang võimutülile. Lisa: Võimuleppe lisa

  18. Res Publica : umbusaldamine võib lõpetada senise koalitsiooni / Villy Paimets

    Index Scriptorium Estoniae

    Paimets, Villy, 1972-

    2005-01-01

    Res Publica erakorraline volikogu avaldas toetust justiitsministrile ja andis peaministrile volitused lõpetada justiitsministri umbusaldamise korral senine koalitsioon ning alustada läbirääkimisi Isamaaliiduga. Lisa: Res Publica toetab Vaherit

  19. Res Publica andis kolmele poliitikule fiktiivse elukoha / Kärt Karpa

    Index Scriptorium Estoniae

    Karpa, Kärt, 1973-

    2002-01-01

    Väidetavalt lasi Res Publica enne kohalikke valimisi ühte Pirita eramajja sisse registreerida Jaanus Rahumäe ja veel kaks Res Publica liiget, et nad saaksid kandideerida Tallinna volikogusse ja Pirita halduskogusse

  20. Riigikogu aseesimeeste valimine tekitas paksu verd : Res Publical riigikogu juhatuses kaks kohta / Katrin Pauts

    Index Scriptorium Estoniae

    Pauts, Katrin, 1977-

    2005-01-01

    Riigikogu aseesimeesteks valiti Res Publica liige Taavi Veskimägi ja Keskerakonna liige Toomas Varek. Opositsiooniparteil Res Publica on nüüd juhatuses kaks kohta. Erakondade juhtpoliitikute kommentaare

  1. Coupling FT Raman and FT SERS microscopy with TLC plates for in situ identification of chemical compounds

    Science.gov (United States)

    Caudin, J. P.; Beljebbar, A.; Sockalingum, G. D.; Angiboust, J. F.; Manfait, M.

    1995-11-01

    Direct analysis of sub-femtogram quantities of chemical compounds on thin layer chromatography plates has been made possible by associating Fourier transform Raman microspectroscopy with SERS spectroscopy. The interfacing elements of the FT Raman microscope system are discussed and optimised such that a lateral resolution on the micron scale is achieved in the sample plane. Micro-FT SERS results obtained from a model biological molecule indicate preservation of molecular conformation upon adsorption at the SERS active surface. With NIR radiation it is thus possible to analyse plates with or without fluorescence indicators.

  2. RES scintigraphy in polycythemia vera and secondary or relative polycythemia

    Energy Technology Data Exchange (ETDEWEB)

    Rudberg, U. (Depts. of Diagnostic Radiology and Internal Medicine, St. Goeran' s Hospital, Stockholm (Sweden)); Skaarberg, K.O. (Depts. of Diagnostic Radiology and Internal Medicine, St. Goeran' s Hospital, Stockholm (Sweden))

    1993-03-01

    Scintigraphy of the reticuloendothelial system (RES) was performed in 19 patients with polycythemia vera (PCV) and in 18 with secondary or relative polycythemia (PS). Bone marrow extension was found in all patients with PCV and in 11 of 18 patients with PS. The patients with PCV had a higher degree of extension than those with PS. Increased pelvic bone marrow activity was found in 16 of 19 PCV patients, but in none with PS. Splenomegaly was found in 9 patients with PCV, and in none with PS. It is concluded that RES scintigraphy in the majority of patients may differentiate between PCV and PS using the parameters pelvic bone marrow activity, bone marrow extension and splenic size. (orig.).

  3. RES scintigraphy in polycythemia vera and secondary or relative polycythemia

    International Nuclear Information System (INIS)

    Rudberg, U.; Skaarberg, K.O.

    1993-01-01

    Scintigraphy of the reticuloendothelial system (RES) was performed in 19 patients with polycythemia vera (PCV) and in 18 with secondary or relative polycythemia (PS). Bone marrow extension was found in all patients with PCV and in 11 of 18 patients with PS. The patients with PCV had a higher degree of extension than those with PS. Increased pelvic bone marrow activity was found in 16 of 19 PCV patients, but in none with PS. Splenomegaly was found in 9 patients with PCV, and in none with PS. It is concluded that RES scintigraphy in the majority of patients may differentiate between PCV and PS using the parameters pelvic bone marrow activity, bone marrow extension and splenic size. (orig.)

  4. Generalized second law of thermodynamics in f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Karami, K.; Abdolmaleki, A., E-mail: KKarami@uok.ac.ir, E-mail: AAbdolmaleki@uok.ac.ir [Department of Physics, University of Kurdistan, Pasdaran St., Sanandaj (Iran, Islamic Republic of)

    2012-04-01

    We investigate the validity of the generalized second law (GSL) of gravitational thermodynamics in the framework of f(T) modified teleparallel gravity. We consider a spatially flat FRW universe containing only the pressureless matter. The boundary of the universe is assumed to be enclosed by the Hubble horizon. For two viable f(T) models containing f(T) = T+μ{sub 1}((−T)){sup n} and f(T) = T−μ{sub 2}T(1−e{sup βT{sub 0}/T}), we first calculate the effective equation of state and deceleration parameters. Then, (we investigate the null and strong energy conditions and conclude that a sudden future singularity appears in both models. Furthermore, using a cosmographic analysis we check the viability of two models. Finally, we examine the validity of the GSL and find that for both models it) is satisfied from the early times to the present epoch. But in the future, the GSL is violated for the special ranges of the torsion scalar T.

  5. Model FT631 moisture/density combined gauge

    International Nuclear Information System (INIS)

    Ji Changsong; Dai Zhude; Zhang Jianguo; Zhang Enshang; Huang Jiling; Meng Qingbao

    1990-01-01

    Model FT631 Moisture/Density Combined Gauge has been developed, with which both water content and density, the two parameters of measured medium (soil), are obtained in one act of measurement at the same time. A China patent has been taken for this invention

  6. Vibrational microspectroscopy of food. Raman vs. FT-IR

    DEFF Research Database (Denmark)

    Thygesen, Lisbeth Garbrecht; Løkke, Mette Marie; Micklander, Elisabeth

    2003-01-01

    . The high spatial resolution makes it possible to study areas down to approximately 10x10 mum with FT-IR microspectroscopy and approximately 1 x 1 mum with Raman microspectroscopy. This presentation highlights the advantages and disadvantages of the two microspectroscopic techniques when applied...

  7. Analysis of organophosphorus pesticides using FT-NMR

    International Nuclear Information System (INIS)

    Miyata, Yoshihiko; Takahashi, Yoshikazu; Ando, Hiroaki

    1988-01-01

    A rapid and highly selective method of the identification of 23 kinds of organophosphorus pesticides was develop by using 31 P FT-NMR with 1 H complete decoupling method. Chemical shifts referenced by 85 % H 3 PO 4 were within -4 to 100 ppm, and there was no overlapping among the organophosphorus pesticides used in this experiment. (author)

  8. Determination of cellulose I crystallinity by FT-Raman spectroscopy

    Science.gov (United States)

    Umesh P. Agarwal; Richard S. Reiner; Sally A. Ralph

    2009-01-01

    Two new methods based on FT-Raman spectroscopy, one simple, based on band intensity ratio, and the other, using a partial least-squares (PLS) regression model, are proposed to determine cellulose I crystallinity. In the simple method, crystallinity in semicrystalline cellulose I samples was determined based on univariate regression that was first developed using the...

  9. Textural Properties of Agarose Gels described by FT-Rheology

    NARCIS (Netherlands)

    Klein, C.O.; Venema, P.; Sagis, L.M.C.; Linden, van der E.

    2008-01-01

    Large Amplitude Oscillatory Shear was used to determine the non-linear rheological properties of agarose gels. The analysis was performed with the characteristic functions method based on FT-Rheology, that gives access to a physical interpretation of the non-linear regime. This analysis was then

  10. Further developments of the RES3T sorption database

    International Nuclear Information System (INIS)

    Brendler, V.

    2002-01-01

    RES 3 T - the Rossendorf expert system for surface and sorption thermodynamics currently under development has been expanded towards the provision of comprehensive sorption data sets suitable for complex natural systems of rocks and soils. Also a statistical evaluation of the available SCM (surface complexation model) data is now implemented. Finally, a normalization of SCM parameters to a standard site density has been incorporated. (orig.)

  11. Re-conceptualizing mother tongue tuition of Estonian abroad as a transnational phenomenon

    Directory of Open Access Journals (Sweden)

    Maarja Siiner

    2017-05-01

    Full Text Available The governmental initiative called the Compatriots Programme, which supports language tuition in Estonian schools and societies abroad, reveals an increased interest in developing intergenerational language transmission in the growing Estonian diaspora. This transnational language political activity signals a new era in language policy, where nation states are increasingly decentralized by migration. The evaluation of the program furthermore reveals that organizing such schools requires a willingness to take language political agency, typically conducted by well-educated and well-integrated resourceful transnational multilingual parents. The present article outlines the results of an ethnographic study of the process of establishing the Estonian School in Copenhagen. This step has demanded a change in the mindset still prevailing in Estonia that language political activities, such as planning language acquisition, are solely the responsibility of the state. Since the prevailing language ideology in Denmark is not favorable towards multilingualism in migrant languages, intergenerational language transmission furthermore presupposes a feeling of ownership of the language and high language self-esteem. "Hargmaise keelepoliitika sünd. Eesti keeleõppe korraldamise võimalikkusest välismaal Taani näitel" Hargmaisus, kasvav väljarändajate arv ja sellega ka eesti keele rääkijate hulk välismaal on jätnud oma jälje eesti keelepoliitikale. Kui varem uuriti peamiselt seda, kuidas eesti keel muukeelses kontekstis muutub, siis viimasel kümnendil on riik asunud aktiivselt toetama eesti keele jätkuvat kasutamist välismaal, rahastades rahvuskaaslaste programmi abil haridusprogramme. Kuid millised faktorid määravad selle, kas uus eestlaste põlvkond oskab ja tahab eesti keelt rääkida? Artikkel hindab etnograafilises ja sotsiolingvistilises võtmes Kopenhaagenis kolm aastat tegutsenud Eesti Kooli ja Lasteklubi näitel, millised on keelekasutust

  12. Res Publica pakub sponsoritele anonüümsust / Virkko Lepassalu

    Index Scriptorium Estoniae

    Lepassalu, Virkko, 1971-

    2003-01-01

    Mõnede tõenäoliselt Res Publica lähedaste ettevõtjate seas levib erakonna nimel rahapalumiskiri, mis lubab sponsorile anonüümsust. Vt. samas: Telefonikõne ettevõtja ja Res Publica aseesimehe Ken-Marti Vaheri vahel ; Teisedki on saanud rahaallikaid varjates ; Res Publica on loobunud reklaamibroneeringutest

  13. Res Publica aukohus heidab juhtidele ette eetikavääratust / Toomas Mattson

    Index Scriptorium Estoniae

    Mattson, Toomas, 1970-

    2002-01-01

    Ilmunud ka: Põhjarannik ; Severnoje Poberezhje 22. november lk. 3;4. Res Publica aukohus arvab, et Res Publica juhid on rikkunud erakonna põhikirja, sisekorda ja eetikakoodeksit Kohtla-Järve juhtumi lahendamisel. Kohtla-Järvel sai linnapeaks riisumiskahtlusega uurimise all olev Valeri Korb tänu Keskerakonna ja Res Publica koalitsioonileppele. Kommenteerib Juhan Kivirähk

  14. Res Publica toetus pole aastaga üle viie protsendi tõusnud / Tuuli Koch

    Index Scriptorium Estoniae

    Koch, Tuuli

    2006-01-01

    Emori jaanuarikuu küsitluse põhjal on 22 protsendiga suurim toetajaskond Keskerakonnal, Res Publica reiting on aasta aega püsinud viie ja kolme toetusprotsendi vahel. Vt. samas: Taavi Veskimägi. 2 küsimust. Diagrammid: Res Publica valiks riigikogusse tagasi vaid kolm protsenti valijaist; Toetus Res Publicale

  15. Res Publica ladvikus hõõgub võimutüli / Tuuli Koch

    Index Scriptorium Estoniae

    Koch, Tuuli

    2006-01-01

    22. aprillil kogunenud Res Publica volikogu toetas 60 poolthäälega ühe vastu Res Publica ja Isamaaliidu ühinemist. Tõnis Palts teatas volikogul esinedes, et Taavi Veskimägi ei sobi Res Publica poolseks läbirääkimiste juhiks

  16. Res Publicas käärib mäss / Hants Hint

    Index Scriptorium Estoniae

    Hint, Hants

    2002-01-01

    Res Publica eestseisuse liige ja Ida-Viru piirkonna esimees Hants Hint vastab küsimustele Res Publica ja Keskerakonna võimuliidu moodustamisega tekkinud skandaali, Res Publica esimehe Juhan Partsiga kohtumise kohta. Vt. samas: "Korbi toetajaid ootab hukkamõist"

  17. Technical Capability Upgrades to the NASA Langley Research Center 8 ft. by 15 ft. Thermal Vacuum Chamber

    Science.gov (United States)

    Thornblom, Mark N.; Beverly, Joshua; O'Connell, Joseph J.; Duncan, Dwight L.

    2016-01-01

    The 8 ft. by 15 ft. thermal vacuum chamber (TVAC), housed in Building 1250 at the NASA Langley Research Center (LaRC), and managed by the Systems Integration and Test Branch within the Engineering Directorate, has undergone several significant modifications to increase testing capability, safety, and quality of measurements of articles under environmental test. Significant modifications include: a new nitrogen distribution manifold for supplying the shroud and other cold surfaces to liquid nitrogen temperatures; a new power supply and distribution system for accurately controlling a quartz IR lamp suite; a suite of contamination monitoring sensors for outgassing measurements and species identification; a new test article support system; signal and power feed-throughs; elimination of unnecessary penetrations; and a new data acquisition and control commanding system including safety interlocks. This paper will provide a general overview of the LaRC 8 ft. by 15 ft. TVAC chamber, an overview of the new technical capabilities, and will illustrate each upgrade in detail, in terms of mechanical design and predicted performance. Additionally, an overview of the scope of tests currently being performed in the chamber will be documented, and sensor plots from tests will be provided to show chamber temperature and pressure performance with actual flight hardware under test.

  18. Technical Capability Upgrades to the NASA Langley Research Center 6 ft. by 6 ft. Thermal Vacuum Chamber

    Science.gov (United States)

    Thornblom, Mark N.; Beverly, Joshua; O'Connell, Joseph J.; Mau, Johnny C.; Duncan, Dwight L.

    2014-01-01

    The 6 ft. by 6 ft. thermal vacuum chamber (TVAC), housed in Building 1250 at the NASA Langley Research Center (LaRC), and managed by the Systems Integration and Test Branch within the Engineering Directorate, has undergone several significant modifications to increase testing capability, safety, and quality of measurements of articles under environmental test. Significant modifications include: a new nitrogen thermal conditioning unit for controlling shroud temperatures from -150degC to +150degC; two horizontal auxiliary cold plates for independent temperature control from -150degC to +200degC; a suite of contamination monitoring sensors for outgassing measurements and species identification; signal and power feed-throughs; new pressure gauges; and a new data acquisition and control commanding system including safety interlocks. This presentation will provide a general overview of the LaRC 6 ft. by 6 ft. TVAC chamber, an overview of the new technical capabilities, and illustrate each upgrade in detail, in terms of mechanical design and predicted performance. Additionally, an overview of the scope of tests currently being performed in the chamber will be documented, and sensor plots from tests will be provided to show chamber temperature and pressure performance with actual flight hardware under test.

  19. The Crowd in Mind and Crowded Minds: An Experimental Investigation of Crowding Effects on Students' Views Regarding Tuition Fees in Germany

    Science.gov (United States)

    Hellmann, Jens H.; Jucks, Regina

    2017-01-01

    In higher education, just amounts of tuition fees are often a topic of heated debate among different groups such as students, university teachers, administrative staff, and policymakers. We investigated whether unpleasant situations that students often experience at university due to social crowding can affect students' views on the justified…

  20. Cost and Price Increases in Higher Education: Evidence of a Cost Disease on Higher Education Costs and Tuition Prices and the Implications for Higher Education Policy

    Science.gov (United States)

    Trombella, Jerry

    2011-01-01

    As concern over rapidly rising college costs and tuition sticker prices have increased, a variety of research has been conducted to determine potential causes. Most of this research has focused on factors unique to higher education. In contrast, cost disease theory attempts to create a comparative context to explain cost increases in higher…

  1. Slight Decline in Use of Private School Tuition Vouchers in 2010-2011: Loss of Schools Results in Fewer Students. Research Brief. Volume 99, Number 2

    Science.gov (United States)

    Dickman, Anneliese; Schmidt, Jeffrey

    2011-01-01

    For the first time since its 1998 expansion to include religious schools, enrollment in the Milwaukee Parental Choice Program (MPCP) did not grow in the 2010-2011 school year. Currently, 20,996 private school students receive taxpayer-funded tuition vouchers (of $6,442 per pupil), a decrease of 66 students over last year. Chart 1 shows program…

  2. The Heterogeneous Non-Resident Student Body: Measuring the Effect of Out-of-State Students' Home-State Wealth on Tuition and Fee Price Variations

    Science.gov (United States)

    González Canché, Manuel S.

    2017-01-01

    More than 40 years of research has found a positive relationship between increases in the proportion of non-resident students enrolling in an institution and increases in the tuition prices this institution charges to these same students. Notably, this line of research has consistently treated this non-resident student body as if they constitute a…

  3. Isolation and functional characterization of JcFT, a FLOWERING LOCUS T (FT) homologous gene from the biofuel plant Jatropha curcas.

    Science.gov (United States)

    Li, Chaoqiong; Luo, Li; Fu, Qiantang; Niu, Longjian; Xu, Zeng-Fu

    2014-05-08

    Physic nut (Jatropha curcas L.) is a potential feedstock for biofuel production because Jatropha oil is highly suitable for the production of the biodiesel and bio-jet fuels. However, Jatropha exhibits low seed yield as a result of unreliable and poor flowering. FLOWERING LOCUS T (FT) -like genes are important flowering regulators in higher plants. To date, the flowering genes in Jatropha have not yet been identified or characterized. To better understand the genetic control of flowering in Jatropha, an FT homolog was isolated from Jatropha and designated as JcFT. Sequence analysis and phylogenetic relationship of JcFT revealed a high sequence similarity with the FT genes of Litchi chinensis, Populus nigra and other perennial plants. JcFT was expressed in all tissues of adult plants except young leaves, with the highest expression level in female flowers. Overexpression of JcFT in Arabidopsis and Jatropha using the constitutive promoter cauliflower mosaic virus 35S or the phloem-specific promoter Arabidopsis SUCROSE TRANSPORTER 2 promoter resulted in an extremely early flowering phenotype. Furthermore, several flowering genes downstream of JcFT were up-regulated in the JcFT-overexpression transgenic plant lines. JcFT may encode a florigen that acts as a key regulator in flowering pathway. This study is the first to functionally characterize a flowering gene, namely, JcFT, in the biofuel plant Jatropha.

  4. The progress of RES environment in the most recent member states of the EU

    Energy Technology Data Exchange (ETDEWEB)

    Patlitzianas, Konstantinos [Management and Decision Support Systems Lab (EPU-NTUA), School of Electrical and Computer Engineering, National Technical University of Athens, 9, Iroon Polytechniou str., 15773, Athens (Greece); Karagounis, Konstantinos [National and Kapodistrian University of Athens, Dental School, 2 Thivon Str., Goudi, 11527 Athens (Greece)

    2011-02-15

    The most recent EU member states seem to have important Renewable Energy Sources (RES) potential. However, they have serious structural difficulties in development and integration of RES policies. Indeed, the balanced development of RES between the member states is urgent today. The penetration of the RES in these member states is related to the existence of an appropriate environment (political, economical, social, and technological). The current paper is based on an analytical review and specific PEST analysis aiming to assess the current RES environment and the progress so far in each of these most recent EU members. (author)

  5. FT-IR Microspectroscopy of Rat Ear Cartilage.

    Directory of Open Access Journals (Sweden)

    Benedicto de Campos Vidal

    Full Text Available Rat ear cartilage was studied using Fourier transform-infrared (FT-IR microspectroscopy to expand the current knowledge which has been established for relatively more complex cartilage types. Comparison of the FT-IR spectra of the ear cartilage extracellular matrix (ECM with published data on articular cartilage, collagen II and 4-chondroitin-sulfate standards, as well as of collagen type I-containing dermal collagen bundles (CBs with collagen type II, was performed. Ear cartilage ECM glycosaminoglycans (GAGs were revealed histochemically and as a reduction in ECM FT-IR spectral band heights (1140-820 cm-1 after testicular hyaluronidase digestion. Although ear cartilage is less complex than articular cartilage, it contains ECM components with a macromolecular orientation as revealed using polarization microscopy. Collagen type II and GAGs, which play a structural role in the stereo-arrangement of the ear cartilage, contribute to its FT-IR spectrum. Similar to articular cartilage, ear cartilage showed that proteoglycans add a contribution to the collagen amide I spectral region, a finding that does not recommend this region for collagen type II quantification purposes. In contrast to articular cartilage, the symmetric stretching vibration of -SO3- groups at 1064 cm-1 appeared under-represented in the FT-IR spectral profile of ear cartilage. Because the band corresponding to the asymmetric stretching vibration of -SO3- groups (1236-1225 cm-1 overlapped with that of amide III bands, it is not recommended for evaluation of the -SO3- contribution to the FT-IR spectrum of the ear cartilage ECM. Instead, a peak (or shoulder at 1027-1016 cm-1 could be better considered for this intent. Amide I/amide II ratios as calculated here and data from the literature suggest that protein complexes of the ear cartilage ECM are arranged with a lower helical conformation compared to pure collagen II. The present results could motivate further studies on this tissue

  6. Video-based instructions for surgical hand disinfection as a replacement for conventional tuition? A randomised, blind comparative study

    Directory of Open Access Journals (Sweden)

    Weber, Uwe

    2016-08-01

    Full Text Available Introduction: Various different learning methods are available for planning tuition regarding the introduction to surgical hand disinfection. These learning methods should help to organise and deal with this topic. The use of a video film is an alternative to conventional tuition due to the real presentation possibilities of practical demonstration. Objective: This study examines by way of comparison which form of communication is more effective for learning and applying surgical hand disinfection for medical students in their first year of studies: video-based instruction or conventional tuition. Methodology: A total of 50 first-year medical students were randomly allocated either to the “Conventional Instruction” (CI study group or to the “Video-based Instruction” (VI study group. The conventional instruction was carried out by an experienced nurse preceptor/nurse educator for the operating theatre who taught the preparatory measures and the actual procedure in a two-minute lesson. The second group watched a two-minute video sequence with identical content. Afterwards, both groups demonstrated practically the knowledge they had acquired at an individual practical test station. The quality (a of the preparation and (b of the procedure as well as (c the quality of the results was assessed by 6 blind experts using a check list. The acceptability of the respective teaching method was also asked about using a questionnaire.Results: The group performance did not differ either in the preparation (=-78, <0.44 or in the quality (=-99, <0.34. With respect to performance, it was possible to demonstrate a strong treatment effect. In the practical (=-3.33, <0.002, =0.943 and in the total score (=-2.65, <0.011, =0.751, the group with video-based instruction achieved a significantly better result. In response to the question as to which of the two learning methods they would prefer, the significant majority (60.4% of students stated video instruction

  7. FT-NIR: A Tool for Process Monitoring and More.

    Science.gov (United States)

    Martoccia, Domenico; Lutz, Holger; Cohen, Yvan; Jerphagnon, Thomas; Jenelten, Urban

    2018-03-30

    With ever-increasing pressure to optimize product quality, to reduce cost and to safely increase production output from existing assets, all combined with regular changes in terms of feedstock and operational targets, process monitoring with traditional instruments reaches its limits. One promising answer to these challenges is in-line, real time process analysis with spectroscopic instruments, and above all Fourier-Transform Near Infrared spectroscopy (FT-NIR). Its potential to afford decreased batch cycle times, higher yields, reduced rework and minimized batch variance is presented and application examples in the field of fine chemicals are given. We demonstrate that FT-NIR can be an efficient tool for improved process monitoring and optimization, effective process design and advanced process control.

  8. Constraining f(T) gravity in the Solar System

    Energy Technology Data Exchange (ETDEWEB)

    Iorio, Lorenzo [Ministero dell' Istruzione dell' Università e della Ricerca (M.I.U.R), Viale Unità di Italia 68, 70125 Bari (Italy); Radicella, Ninfa [Dipartimento di Fisica E.R. Caianiello, Università di Salerno, Via Giovanni Paolo II 132, Fisciano (Italy); Ruggiero, Matteo Luca, E-mail: lorenzo.iorio@libero.it, E-mail: ninfa.radicella@sa.infn.it, E-mail: matteo.ruggiero@polito.it [DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino (Italy)

    2015-08-01

    In the framework of f(T) theories of gravity, we solve the field equations for f(T)=T+α T{sup n} in the weak-field approximation and for spherical symmetry spacetime. Since f(T)=T corresponds to Teleparallel Gravity, which is equivalent to General Relativity, the non linearity of the Lagrangian are expected to produce perturbations of the general relativistic solutions, parameterized by α. Hence, we use the f(T) solutions to model the gravitational field of the Sun and exploit data from accurate radio-tracking of spacecrafts orbiting Mercury and Saturn to infer preliminary bounds on the model parameter α and on the cosmological constant Λ.

  9. In vivo release of FT-207 from irradiation polymerized composites

    International Nuclear Information System (INIS)

    Xie Huaijiang; Kou Qinghe; Song Juzhong; Peng Tao; Chen Xiaohui; Zhang Dexi

    1999-01-01

    Polymer-drugs composite with long periods of controlled slow release was made by radiation induced polymerization in room temperature. In experiment in vivo, the composite was implanted subcutaneously the back of rabbits. The concentration of 1-(2-tetrahydrofuryl)-5-fluorouracil (FT-207) was determined by HPLC. The results of test showed that the concentration of serum drug is 1.0 μg/mL after 1 week in the polymer-drug composites group. The drug concentration of tissue surrounding the composites is 76.2 +- 10.4 μg/mL. The drug concentration in the far organ (e.g.the lung 1.2 +- 0.5 μg/mL) is lower than the tissue surrounding the composite. The serum drug is higher and shorter time by the routine methods. The serum concentration of FT-207 is lower an retarded by implanted

  10. Applications of FT-IR spectrophotometry in cancer diagnostics.

    Science.gov (United States)

    Bunaciu, Andrei A; Hoang, Vu Dang; Aboul-Enein, Hassan Y

    2015-01-01

    This review provides a brief background to the application of infrared spectroscopy, including Fourier transform-infrared spectroscopy, in biological fluids. It is not meant to be complete or exhaustive but to provide the reader with sufficient background for selected applications in cancer diagnostics. Fourier transform-infrared spectroscopy (FT-IR) is a fast and nondestructive analytical method. The infrared spectrum of a mixture serves as the basis to quantitate its constituents, and a number of common clinical chemistry tests have proven to be feasible using this approach. This review focuses on biomedical FT-IR applications, published in the period 2009-2013, used for early detection of cancer through qualitative and quantitative analysis.

  11. FT-IR spectroscopy of lipoproteins—A comparative study

    Science.gov (United States)

    Krilov, Dubravka; Balarin, Maja; Kosović, Marin; Gamulin, Ozren; Brnjas-Kraljević, Jasminka

    2009-08-01

    FT-IR spectra, in the frequency region 4000-600 cm -1, of four major lipoprotein classes: very low density lipoprotein (VLDL), low density lipoprotein (LDL) and two subclasses of high density lipoproteins (HDL 2 and HDL 3) were analyzed to obtain their detailed spectral characterization. Information about the protein domain of particle was obtained from the analysis of amide I band. The procedure of decomposition and curve fitting of this band confirms the data already known about the secondary structure of two different apolipoproteins: apo A-I in HDL 2 and HDL 3 and apo B-100 in LDL and VLDL. For information about the lipid composition and packing of the particular lipoprotein the well expressed lipid bands in the spectra were analyzed. Characterization of spectral details in the FT-IR spectrum of natural lipoprotein is necessary to study the influence of external compounds on its structure.

  12. Laser Spark Formamide Decomposition Studied by FT-IR Spectroscopy

    Czech Academy of Sciences Publication Activity Database

    Ferus, Martin; Kubelík, Petr; Civiš, Svatopluk

    2011-01-01

    Roč. 115, č. 44 (2011), s. 12132-12141 ISSN 1089-5639 R&D Projects: GA AV ČR IAA400400705; GA AV ČR IAAX00100903; GA ČR GAP208/10/2302 Institutional research plan: CEZ:AV0Z40400503 Keywords : FT-IR spectroscopy * high-power laser * induced dielectric-breakdown Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 2.946, year: 2011

  13. Generalized Noether symmetry in f(T) gravity

    International Nuclear Information System (INIS)

    Mohseni Sadjadi, H.

    2012-01-01

    We consider modified teleparallel gravity (f(T) gravity), as a framework to explain the present accelerated expansion of the universe. The matter component is assumed to be cold dark matter. To find the explicit form of the function f, we utilize generalized Noether theorem and use generalized vector fields as variational symmetries of the corresponding Lagrangian. We study the cosmological consequences of the obtained results.

  14. Wormholes in a viable f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Jamil, Mubasher [National University of Sciences and Technology (NUST), Center for Advanced Mathematics and Physics (CAMP), Islamabad (Pakistan); Eurasian National University, Eurasian International Center for Theoretical Physics, Astana (Kazakstan (Kazakhstan)); Momeni, Davood; Myrzakulov, Ratbay [Eurasian National University, Eurasian International Center for Theoretical Physics, Astana (Kazakstan (Kazakhstan))

    2013-01-15

    In this paper, we derive some new exact solutions of static wormholes in f(T) gravity. We discuss independent cases of the pressure components including isotropic and anisotropic pressure. Lastly we consider radial pressure satisfying a barotropic equation of state. We also check the behavior of null energy condition (NEC) for each case and observe that it is violated for the anisotropic case, while it is satisfied for isotropic and barotropic cases. (orig.)

  15. Completely automated open-path FT-IR spectrometry.

    Science.gov (United States)

    Griffiths, Peter R; Shao, Limin; Leytem, April B

    2009-01-01

    Atmospheric analysis by open-path Fourier-transform infrared (OP/FT-IR) spectrometry has been possible for over two decades but has not been widely used because of the limitations of the software of commercial instruments. In this paper, we describe the current state-of-the-art of the hardware and software that constitutes a contemporary OP/FT-IR spectrometer. We then describe advances that have been made in our laboratory that have enabled many of the limitations of this type of instrument to be overcome. These include not having to acquire a single-beam background spectrum that compensates for absorption features in the spectra of atmospheric water vapor and carbon dioxide. Instead, an easily measured "short path-length" background spectrum is used for calculation of each absorbance spectrum that is measured over a long path-length. To accomplish this goal, the algorithm used to calculate the concentrations of trace atmospheric molecules was changed from classical least-squares regression (CLS) to partial least-squares regression (PLS). For calibration, OP/FT-IR spectra are measured in pristine air over a wide variety of path-lengths, temperatures, and humidities, ratioed against a short-path background, and converted to absorbance; the reference spectrum of each analyte is then multiplied by randomly selected coefficients and added to these background spectra. Automatic baseline correction for small molecules with resolved rotational fine structure, such as ammonia and methane, is effected using wavelet transforms. A novel method of correcting for the effect of the nonlinear response of mercury cadmium telluride detectors is also incorporated. Finally, target factor analysis may be used to detect the onset of a given pollutant when its concentration exceeds a certain threshold. In this way, the concentration of atmospheric species has been obtained from OP/FT-IR spectra measured at intervals of 1 min over a period of many hours with no operator intervention.

  16. Technology development for iron F-T catalysts. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Frame, R.R.; Gala, H.B.

    1994-08-01

    The objectives of this work were twofold. The first objective was to design and construct a pilot plant for preparing precipitated iron oxide F-T precursors and demonstrate that the rate of production from this plant is equivalent to 100 lbs/day of dried metal oxide. Secondly, these precipitates were to be used to prepare catalysts capable of achieving 88% CO + H{sub 2} conversion with {le} 5 mole percent selectivity to methane + ethane.

  17. Computer simulation of FT-NMR multiple pulse experiment

    Science.gov (United States)

    Allouche, A.; Pouzard, G.

    1989-04-01

    Using the product operator formalism in its real form, SIMULDENS expands the density matrix of a scalar coupled nuclear spin system and simulates analytically a large variety of FT-NMR multiple pulse experiments. The observable transverse magnetizations are stored and can be combined to represent signal accumulation. The programming language is VAX PASCAL, but a MacIntosh Turbo Pascal Version is also available.

  18. Computer simulation of FT-NMR multiple pulse experiment

    International Nuclear Information System (INIS)

    Allouche, A.; Pouzard, G.

    1989-01-01

    Using the product operator formalism in its real form, SIMULDENS expands the density matrix of a scalar coupled nuclear spin system and simulates analytically a large variety of FT-NMR multiple pulse experiments. The observable transverse magnetizations are stored and can be combined to represent signal accumulation. The programming language is VAX PASCAL, but a MacIntosh Turbo Pascal Version is also available. (orig.)

  19. Characterization of FLOWERING LOCUS T1 (FT1 gene in Brachypodium and wheat.

    Directory of Open Access Journals (Sweden)

    Bo Lv

    Full Text Available The phase transition from vegetative to reproductive growth is a critical event in the life cycle of flowering plants. FLOWERING LOCUS T (FT plays a central role in the regulation of this transition by integrating signals from multiple flowering pathways in the leaves and transmitting them to the shoot apical meristem. In this study, we characterized FT homologs in the temperate grasses Brachypodium distachyon and polyploid wheat using transgenic and mutant approaches. Downregulation of FT1 by RNAi was associated with a significant downregulation of the FT-like genes FT2 and FT4 in Brachypodium and FT2 and FT5 in wheat. In a transgenic wheat line carrying a highly-expressed FT1 allele, FT2 and FT3 were upregulated under both long and short days. Overexpression of FT1 caused extremely early flowering during shoot regeneration in both Brachypodium and hexaploid wheat, and resulted in insufficient vegetative tissue to support the production of viable seeds. Downregulation of FT1 transcripts by RNA interference (RNAi resulted in non-flowering Brachypodium plants and late flowering plants (2-4 weeks delay in wheat. A similar delay in heading time was observed in tetraploid wheat plants carrying mutations for both FT-A1 and FT-B1. Plants homozygous only for mutations in FT-B1 flowered later than plants homozygous only for mutations in FT-A1, which corresponded with higher transcript levels of FT-B1 relative to FT-A1 in the early stages of development. Taken together, our data indicate that FT1 plays a critical role in the regulation of flowering in Brachypodium and wheat, and that this role is associated with the simultaneous regulation of other FT-like genes. The differential effects of mutations in FT-A1 and FT-B1 on wheat heading time suggest that different allelic combinations of FT1 homoeologs could be used to adjust wheat heading time to improve adaptation to changing environments.

  20. Characterization and identification of microorganisms by FT-IR microspectrometry

    Science.gov (United States)

    Ngo-Thi, N. A.; Kirschner, C.; Naumann, D.

    2003-12-01

    We report on a novel FT-IR approach for microbial characterization/identification based on a light microscope coupled to an infrared spectrometer which offers the possibility to acquire IR-spectra of microcolonies containing only few hundred cells. Microcolony samples suitable for FT-IR microspectroscopic measurements were obtained by a replica technique with a stamping device that transfers spatially accurate cells of microcolonies growing on solid culture plates to a special, IR-transparent or reflecting stamping plate. High quality spectra could be recorded either by applying the transmission/absorbance or the reflectance/absorbance mode of the infrared microscope. Signal to noise ratios higher than 1000 were obtained for microcolonies as small as 40 μm in diameter. Reproducibility levels were established that allowed species and strain identification. The differentiation and classification capacity of the FT-IR microscopic technique was tested for different selected microorganisms. Cluster and factor analysis methods were used to evaluate the complex spectral data. Excellent discrimination between bacteria and yeasts, and at the same time Gram-negative and Gram-positive bacterial strains was obtained. Twenty-two selected strains of different species within the genus Staphylococcus were repetitively measured and could be grouped into correct species cluster. Moreover, the results indicated that the method allows also identifications at the subspecies level. Additionally, the new approach allowed spectral mapping analysis of single colonies which provided spatially resolved characterization of growth heterogeneity within complex microbial populations such as colonies.

  1. Thermodynamics and cosmological reconstruction in f(T , B) gravity

    Science.gov (United States)

    Bahamonde, Sebastian; Zubair, M.; Abbas, G.

    2018-03-01

    Recently, it was formulated a teleparallel theory called f(T , B) gravity which connects both f(T) and f(R) under suitable limits. In this theory, the function in the action is assumed to depend on the torsion scalar T and also on a boundary term related with the divergence of torsion, B = 2∇μTμ. In this work, we study different features of a flat Friedmann-Lemaître-Robertson-Walker (FLRW) cosmology in this theory. First, we show that the FLRW equations can be transformed to the form of Clausius relation TˆhSeff = - dE + WdV, where Tˆh is the horizon temperature and Seff is the entropy which contains contributions both from horizon entropy and an additional entropy term introduced due to the non-equilibrium. We also formulate the constraint for the validity of the generalised second law of thermodynamics (GSLT). Additionally, using a cosmological reconstruction technique, we show that both f(T , B) and - T + F(B) gravity can mimic power-law, de-Sitter and ΛCDM models. Finally, we formulate the perturbed evolution equations and analyse the stability of some important cosmological solutions.

  2. Tesis doctorales 2012-2013 : Serie resúmenes

    OpenAIRE

    Di Gregori, María Cristina

    2014-01-01

    En continuidad con la publicación de Serie Resúmenes, Tesis Doctorales, la Universidad Nacional de La Plata presenta un nuevo libro que contiene información sobre las tesis defendidas y aprobadas correspondiente a los doctores titulados en el período 2012-2013. Como señalarámos en nuestro volumen inaugural, esta publicación se inscribe en el marco de la revalorización que sostiene nuestra institución respecto del valor de la comunicación y difusión del conocimiento; en este caso, la producció...

  3. Resúmenes de los trabajos sobre las Enfermedades Neuromusculares

    OpenAIRE

    Congreso Nacional de Neurología

    2010-01-01

    Las enfermedades neuromusculares constituyen un conjunto de afectaciones que afectan las neuronas motoras periférica, las vías motoras eferentes o los efectores (músculos esqueléticos). Sus manifestaciones clínicas son muy variadas y dependen de la causa y de los niveles de afectación. En este acápite se pueden encontrar los resúmenes de trabajos relacionados con el síndrome de Guillain Barre, polineuropatía diabética, Atrofia Muscular Espinal, Distrofia miotónica y otros todos presentados en...

  4. Making cities energy efficient. Urban and regional planning adopting RES

    Energy Technology Data Exchange (ETDEWEB)

    Ahonen, A.-M.; David, T.; Dorfner, J. [and others

    2013-06-01

    This report summarises the outcomes of a 30 months duration continuing education project entitled 'Urban Planners with Renewable Energy Skills' (UP-RES). The project was carried out by a multi-disciplinary international consortium with the aim of informing planners and related professionals about energy-efficient and CO{sub 2} reducing technologies, practices and systems that can be developed across urban areas to serve whole communities. This report provides an overview of the key issues: The overall project approach to devising a training program based on preceding training needs analysis The key tasks involved in creating the training materials The marketing of the training as well as evaluation results Best practise examples of RES in urban planning. The UP-RES project has focused on several major target groups. These include those groups directly involved in taking forward renewable energy projects for whom the UP-RES training was principally focused; those who wish to deliver such training programmes; and policy makers who are ultimately responsible for the decisions that govern how widely such technologies will be implemented. Each of these groups has its own perspective concerning renewable energy technologies so the report is structured accordingly: For professionals involved in implementation: Among those professions that are likely to become involved with renewable energy initiatives in urban areas are urban planners, architects, energy suppliers, developers, building owners, and consulting engineers. For these professionals chapters 3.2 (summary of training need analysis) and 4 (best practise examples) are most likely to appeal. For training experts and organisations: Training programmes that address the relevance of renewable energies in urban areas require a comprehensive set of materials. As an example of how to organise training courses and lessons learnt, chapter 3 might be interesting. For the generally interested: Renewable energies are

  5. Changes of serum FT3, FT4, sTSH, TRAb, TGA and TMA concentrations in Graves' patients treated with 131I and clinical significances

    International Nuclear Information System (INIS)

    Sun Wenwei; Wei Liqin; Zhao Jie; Ma Qingjie; Sun Hui

    2006-01-01

    Objective: To study the clinical significances of serum FT 3 , FT 4 , sTSH, TRAb, TGA and TMA concentration changes in Graves' patients before and after, 131 I treatment. Methods: The serum FT 3 , FT 4 , sTSH; TRAb, TGA and TMA concentrations before treatment, 3, 6, 12 and 18 months after therapy in 172 Graves' patients and 43 normal controls were obtained by time-resolved fluoroimmunoassay technique. Results: FT 3 and FT 4 concentrations showed an obvious decrease 3 months after treatment, while sTSH and TRAb had remarkable high values, as TGA and TMA demonstrated a trend to increase. FT 3 , FT 4 and sTSH concentrations were close to control group 6 months after treatment, TRAb had a decline trend. All the six indexes approached to normal 18 months after treatment. Conclusion: It is of great of significance for the Graves' patients to accept the developmental observation of serum FT 3 , FT 4 , and sTSH, TRAb, TGA and TMA concentrations before and after 131 I therapy, which provides a great of positive information for therapy guiding, observation and prognosis. (authors)

  6. Characterisation of 1,3-diammonium propylselenate monohydrate by XRD, FT-IR, FT-Raman, DSC and DFT studies

    Science.gov (United States)

    Thirunarayanan, S.; Arjunan, V.; Marchewka, M. K.; Mohan, S.; Atalay, Yusuf

    2016-03-01

    The crystals of 1,3-diammonium propylselenate monohydrate (DAPS) were prepared and characterised X-ray diffraction (XRD), FT-IR, FT-Raman spectroscopy, and DFT/B3LYP methods. It comprises protonated propyl ammonium moieties (diammonium propyl cations), selenate anions and water molecule which are held together by a number of hydrogen bonds and form infinite chains. The XRD data confirm the transfer of two protons from selenic acid to 1,3-diaminopropane molecule. The DAPS complex is stabilised by the presence of O-H···O and N-H···O hydrogen bonds and the electrostatic interactions as well. The N···O and O···O bond distances are 2.82-2.91 and 2.77 Å, respectively. The FT-IR and FT-Raman spectra of 1,3-diammonium propyl selenate monohydrate are recorded and the complete vibrational assignments have been discussed. The geometry is optimised by B3LYP method using 6-311G, 6-311+G and 6-311+G* basis sets and the energy, structural parameters, vibrational frequencies, IR and Raman intensities are determined. Differential scanning colorimetry (DSC) data were also presented to analyse the possibility of the phase transition. Complete natural bonding orbital (NBO) analysis is carried out to analyse the intramolecular electronic interactions and their stabilisation energies. The electrostatic potential of the complex lies in the range +1.902e × 10-2 to -1.902e × 10-2. The limits of total electron density of the complex is +8.43e × 10-2 to -8.43e × 10-2.

  7. FT-Raman and FT-Infrared investigations of archaeological artefacts from Foeni Neolithic site (Banat, Romania

    Directory of Open Access Journals (Sweden)

    Simona Cîntă Pînzaru

    2008-08-01

    Full Text Available An impressive collection of chert artefacts from the Foeni Neolithic archaeological site (Timiş County, Banat region, Romania is hosted by the Banat Museum in Timişoara. A representative set of seven specimens was non-destructively investigated using FT-Raman and ATR-FT-IR spectroscopy. The research was carried out for checking if these readily-available, non-destructive, fast, and cheap methods, which do not require preliminary sample preparation could provide significant information for characterizing the mineral composition of chert artefacts. Based on vibrational data, it was confirmed that the raw material was represented by microcrystalline quartz and moganite, with local concentrations of accessory minerals (calcite, dolomite, and clay minerals. In spite of their wide macroscopic heterogeneity (colour, transparency, based on single point FT-Raman measurements the chert artefacts could not be assigned to distinctive groups of raw silica materials, in order to provide specific arguments for provenance studies. However, the presence of specific accessory minerals (dolomite, illite pointed to distinctive genetic conditions in the case of one lithic material. Sets of measurements (mapping are required for statistically characterizing each artefact specimen. IR data were less significant, due to the rough surface texture of the specimens in contact with the ZnSe crystal of the ATR-FT-IR module. However, illite was identified based solely on its contribution to the IR spectrum. This pioneering study on chert artefacts from Romania based on optical spectroscopic methods shows that there are good premises for a systematic investigation of highly-valuable museum collections, in particular in terms of chert geology.

  8. Renewables portfolio, individual preferences and social values towards RES technologies

    International Nuclear Information System (INIS)

    Kontogianni, Areti; Tourkolias, Christos; Skourtos, Michalis

    2013-01-01

    The massive deployment of renewable energy sources represents a high priority for Greece in order to comply with the Directive 2009/28/EC on the promotion of the use of energy from renewable sources by 2020. In this perspective, Aegean islands especially Lesvos, are endowed with a considerable potential of a portfolio of renewables, a fact that the entrepreneurial interest has already been targeted. However, regulatory attempts for a massive penetration of renewables do not take seriously into account preferences and risk perceptions of local communities where the proposed projects are to be installed. The aim of this study is to investigate individual preferences and social values towards specific technologies of renewables in Lesvos island. We apply an open-ended contingent valuation survey in order to analyze factors shaping public attitudes towards a portfolio of renewable technologies and estimate the economic welfare (Willingness To Pay) of the preferred technologies. We argue that such information is relevant for energy policy design and the establishment of effective measures for the promotion of renewable energy sources. - Highlights: ► We investigate individual preferences and attitudes towards a portfolio of RES technologies. ► We elicit public acceptance for investing in specific RES technologies. ► We analyze factors shaping public preferences of the preferred technologies. ► We estimate the economic welfare of the preferred technologies

  9. Écuyères and "doing gender"

    DEFF Research Database (Denmark)

    Hedenborg, Susanna; Pfister, Gertrud Ursula

    2012-01-01

    masculinity and horsemanship conveys the impression that women had nothing to do with horses. This is true for many situations. The circus arena, however, seems to have been an exception as women could perform there. At the heart of the performances was not only equestrianism, but also the notion of gender......The purpose of this article is to analyse gender relations in equestrianism from the beginning of the 19th to the first decades of the 20th century. Focus will be on the female horse riding circus artists, the écuyères. The fact that women were circus riders at this time is interesting as in many....... It is even likely that ”doing gender” was an indispensable part of the show, as the allure of the écuyères depended on the embodiment and presentation of seemingly incompatible features: beauty, grace and femininity as well as mastery of an art that was a traditionally male domain....

  10. VT 10 ft Contour Lines generated from bare earth lidar - Chittenden

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) ElevationContours_CN10T (10ft contours) was extracted from ElevationContours_CN2T (2ft contours), which was generated by USGS from the 2004...

  11. Performance Monitoring of a Nearshore Berm at Ft. Myers Beach, Florida

    Science.gov (United States)

    2013-08-01

    Figure 14. Establishing a temporary benchmark. ERDC/CHL TR-13-11 28 Visually estimated vegetation/ toe -of- dune line, MHHW line (identified...sediment samples were taken at the toe of the dune (where present), backbeach, high tide line, mean sea level, low tide line, and then at approximately...2-ft, 4-ft, 6-ft, and 8-ft water depths. In the berm area, surface sediment samples were taken at the toe of the dune (where present), backbeach

  12. FT4 Data Analysis Summary (SSI-ARC)

    Science.gov (United States)

    Isaacson, Douglas R.; Gong, Chester; Reardon, Scott Edward; Santiago, Confesor

    2016-01-01

    Standards for Unmanned Aircraft System (UAS) Detect-and-Avoid (DAA) systems are currently being developed under the auspices of the RTCA Special Committee 228 (SC-228). To support the development of these standards, a series of flight tests has been conducted at NASAs Armstrong Flight Research Center (NASA-AFRC). The fourth in this series of flight test activities (Flight Test 4, or simply FT4) was conducted during the Spring and Summer of 2016. FT4 supported the objectives of numerous organizations working toward UAS DAA Minimum Operational Performance Standards (MOPS) and UAS DAA Radar MOPS. The summary provided herein is limited to the objectives, analysis and conclusions of the NASA Ames Research Center (NASA-ARC) SSI team toward the refinement of UAS DAA MOPS. This document provides a high-level overview of FT4 and the SSI-ARC objectives, a summary of the data analysis methodology and recommendations for UAS DAA MOPS refinements based on the data analysis results. A total of 72 encounters were flown to support SSI-ARC objectives. Test results were generally consistent with acceptable UAS DAA system performance and will be considered in broader SC-228 requirements validation efforts. Observed alert lead times indicated acceptable UAS DAA alerting performance. Effective interoperability between the UAS DAA system and the Traffic Alert and Collision Avoidance System (TCAS) was observed with one notable exception: TCAS Resolutions Advisories (RA) were observed in the absence of any DAA alert on two occasions, indicating the need for alert parameter refinement. Findings further indicated the need for continued work in the areas of DAA Well Clear Recovery logic and alert stability for Mode-C-only intruders. Finally, results demonstrated a high level of compliance with a set of evaluation criteria designed to provide anecdotal evidence of acceptable UAS DAA system performance.

  13. Differentiation of Leishmania species by FT-IR spectroscopy

    Science.gov (United States)

    Aguiar, Josafá C.; Mittmann, Josane; Ferreira, Isabelle; Ferreira-Strixino, Juliana; Raniero, Leandro

    2015-05-01

    Leishmaniasis is a parasitic infectious disease caused by protozoa that belong to the genus Leishmania. It is transmitted by the bite of an infected female Sand fly. The disease is endemic in 88 countries Desjeux (2001) [1] (16 developed countries and 72 developing countries) on four continents. In Brazil, epidemiological data show the disease is present in all Brazilian regions, with the highest incidences in the North and Northeast. There are several methods used to diagnose leishmaniasis, but these procedures have many limitations, are time consuming, have low sensitivity, and are expensive. In this context, Fourier Transform Infrared Spectroscopy (FT-IR) analysis has the potential to provide rapid results and may be adapted for a clinical test with high sensitivity and specificity. In this work, FT-IR was used as a tool to investigate the promastigotes of Leishmaniaamazonensis, Leishmaniachagasi, and Leishmaniamajor species. The spectra were analyzed by cluster analysis and deconvolution procedure base on spectra second derivatives. Results: cluster analysis found four specific regions that are able to identify the Leishmania species. The dendrogram representation clearly indicates the heterogeneity among Leishmania species. The band deconvolution done by the curve fitting in these regions quantitatively differentiated the polysaccharides, amide III, phospholipids, proteins, and nucleic acids. L. chagasi and L. major showed a greater biochemistry similarity and have three bands that were not registered in L. amazonensis. The L. amazonensis presented three specific bands that were not recorded in the other two species. It is evident that the FT-IR method is an indispensable tool to discriminate these parasites. The high sensitivity and specificity of this technique opens up the possibilities for further studies about characterization of other microorganisms.

  14. FT Raman microscopy of untreated natural plant fibres

    Science.gov (United States)

    Edwards, H. G. M.; Farwell, D. W.; Webster, D.

    1997-11-01

    The application of FT-Raman microscopy to the non-destructive analysis of natural plant fibres is demonstrated with samples of flax, jute, ramie, cotton, kapok, sisal and coconut fibre. Vibrational assignments are proposed and characteristic features of each material are presented. Samples were not pre-treated chemically before analysis and were used directly from their respective storage collection; the adaptation of the Raman microscopic technique to the identification of specimens of natural fibres in archaeological burial sites is explored for its forensic potential.

  15. Exploring the Impact of the Increased Tuition Fees on Academic Staffs’ Experiences in Post-92 Universities: A Small-Scale Qualitative Study

    Directory of Open Access Journals (Sweden)

    Elizabeth A. Bates

    2014-11-01

    Full Text Available The introduction of the new tuition fee regime in the UK academic session 2012–2013 has resulted in concerns in the Higher Education (HE community that students’ expectations may become unmanageable. Previous research has explored the expectations and experiences of undergraduate psychology students; the current study extended this by considering whether the increased tuition fees have changed the experiences of academic staff in HE. To achieve this, five semi-structured interviews with psychology staff in two post-92 Higher Education Institutions (HEIs were undertaken. Results suggested staff perceptions have undergone minimal change in their day-to-day experiences. However, perceptions of the wider HE issues, such as meeting targets and fulfilling requirements of the role, appear to be enhanced following the contextual changes of HE. Finally, the results reported here suggest generally good staff satisfaction, regardless of these changing times within the sector. Future research and the need for more widespread, large scale studies are discussed.

  16. In media res: commenting on the trajectory of lives.

    Science.gov (United States)

    Bishop, Jeffery; Barina, Rachelle; Stahl, Devan

    2013-01-01

    The stories in this issue of Narrative Inquiry in Bioethics demonstrate two important things. First these stories explore the space between bodily impairment and the social structures that both enable and constrain the flourishing of those who are differently embodied. The authors of these narratives resist the dominant biomedical interpretation of their impairments, but also demonstrate their dependency upon others--social, medical, or familial others. Second, in writing these narratives, the authors are also engaged in an act of identity formation, which sometimes challenge and sometimes embrace the label of disability. By telling their stories in the middle of the action of their lives--in media res, taking up or resisting the label of disability-they also demonstrate the way in which lives can be lived open to new possibilities and interpretations.

  17. Use of FT-NIR Spectroscopy for Bovine Colostrum Analysis

    Directory of Open Access Journals (Sweden)

    P. Navrátilová

    2006-01-01

    Full Text Available Fourier transformation near infrared spectroscopy (FT-NIR in combination with partial least squares (PLS method were used to determine the content of total solids, fat, non-fatty solids, lactose and proteins in bovine colostrum. Spectra of 90 samples were measured in the reflectance mode with a transflectance cuvette in the 10000-4000 cm-1 spectral ranges with 100 scans. Calibration was performed and statistical values of correlation coefficients (R and standard error of calibration values (SEC were computed for total solids (0.986 and 0.919, respectively, fat (0.997 and 0.285, respectively, non-fatty solids (0.995 and 0.451, respectively, lactose (0.934 and 0.285, respectively and protein (0.999 and 0.149, respectively. The calibration models developed were verified by cross validation. It follows from the study that FT-NIR spectroscopy can be used to determine the components of bovine colostrum.

  18. Are tuition-free primary education policies associated with lower infant and neonatal mortality in low- and middle-income countries?

    Science.gov (United States)

    Quamruzzaman, Amm; Mendoza Rodríguez, José M; Heymann, Jody; Kaufman, Jay S; Nandi, Arijit

    2014-11-01

    Robust evidence from low- and middle-income countries (LMICs) suggests that maternal education is associated with better child health outcomes. However, whether or not policies aimed at increasing access to education, including tuition-free education policies, contribute to lower infant and neonatal mortality has not been empirically tested. We joined country-level data on national education policies for 37 LMICs to information on live births to young mothers aged 15-21 years, who were surveyed as part of the population-based Demographic and Health Surveys. We used propensity scores to match births to mothers who were exposed to a tuition-free primary education policy with births to mothers who were not, based on individual-level, household, and country-level characteristics, including GDP per capita, urbanization, and health expenditures per capita. Multilevel logistic regression models, fitted using generalized estimating equations, were used to estimate the effect of exposure to tuition-free primary education policies on the risk of infant and neonatal mortality. We also tested whether this effect was modified by household socioeconomic status. The propensity score matched samples for analyses of infant and neonatal mortality comprised 24,396 and 36,030 births, respectively, from 23 countries. Multilevel regression analyses showed that, on average, exposure to a tuition-free education policy was associated with 15 (95% CI=-32, 1) fewer infant and 5 (95% CI=-13, 4) fewer neonatal deaths per 1000 live births. We found no strong evidence of heterogeneity of this effect by socioeconomic level. Copyright © 2014. Published by Elsevier Ltd.

  19. Measurement of serum FT/sub 4/ in pregnancy and binding protein abnormalities by different methods

    Energy Technology Data Exchange (ETDEWEB)

    Meinhold, H; Wenzel, K W

    1985-11-01

    In serum of pregnant women in the 3rd trimester, the majority of FT/sub 4/ methods compared in the present study yielded FT/sub 4/ concentrations in the lower parts of normal ranges or beyond the lower normal border lines. In TBG deficiency, serum FT/sub 4/ as measured by six FT/sub 4/ kits was found to be in the manufacturer-specified normal ranges and did not show clearly recognizable systematic differences between single kits or kit groups with different methodological principles. considerable kit-dependent differences of measured FT/sub 4/ were found in euthyroid patients with TBG excess; all values were, however, in the respective normal ranges. In dysalbuminemic hyperthyroxinemia, labelled analogue kits yielded falsely elevated FT/sub 4/ concentrations, while FT/sub 4/ measured by non-analogue methods was normal in agreement with the euthyroid status of the patient.

  20. FTIR, FT-Raman, FT-NMR, UV-visible and quantum chemical investigations of 2-amino-4-methylbenzothiazole.

    Science.gov (United States)

    Arjunan, V; Sakiladevi, S; Rani, T; Mythili, C V; Mohan, S

    2012-03-01

    The FT-IR (4000-400 cm(-1)) and FT-Raman (4000-100 cm(-1)) spectral measurements and complete assignments of the observed spectra of 2-amino-4-methylbenzothiazole (2A4MBT) have been proposed. Ab initio and DFT calculations have been performed and the structural parameters of the compound were determined from the optimised geometry with 6-31G(d,p), 6-311++G(d,p) and cc-pVDZ basis sets and giving energies, harmonic vibrational frequencies, depolarisation ratios, IR intensities and Raman activities. (1)H and (13)C NMR spectra were recorded and (1)H and (13)C nuclear magnetic resonance chemical shifts of the molecule were calculated using the gauge independent atomic orbital (GIAO) method. UV-visible spectrum of the compound was also recorded and the electronic properties, such as HOMO, LUMO and band gap energies were measured by time-dependent DFT (TD-DFT) approach. The geometric parameters, energies, harmonic vibrational frequencies, IR intensities, Raman activities chemical shifts and absorption wavelengths were compared with the available experimental data of the molecule. The influences of methyl and amino groups on the skeletal modes and on the proton chemical shifts have been investigated. Copyright © 2011 Elsevier B.V. All rights reserved.

  1. Do TSH, FT3, and FT4 Impact BAT Visualization of Clinical FDG-PET/CT Images?

    Directory of Open Access Journals (Sweden)

    Ryuichi Nishii

    2018-01-01

    Full Text Available Objective. We retrospectively analyzed activated BAT visualization on FDG-PET/CT in patients with various conditions and TH levels to clarify the relationships between visualization of BAT on FDG-PET/CT and the effect of TH. Methods. Patients who underwent clinical FDG-PET/CT were reviewed and we categorized patients into 5 groups: (i thyroid hormone withdrawal (THW group; (ii recombinant human thyrotropin (rhTSH group; (iii hypothyroidism group; (iv hyperthyroidism group; and (v BAT group. A total of sixty-two FDG-PET/CT imaging studies in fifty-nine patients were performed. To compare each group, gender; age; body weight; serum TSH, FT3, and FT4 levels; and outside temperature were evaluated. Results. No significant visualization of BAT was noted in any of the images in the THW, rhTSH, hypothyroidism, and hyperthyroidism groups. All patients in the BAT group were in a euthyroid state. When the BAT-negative and BAT-positive patient groups were compared, it was noted that the minimum and maximum temperature on the day of the PET study and maximum temperature of the one day before the PET study were significantly lower in BAT-positive group than in all those of other groups. Conclusions. Elevated TSH condition before RIT, hyperthyroidism, or hypothyroidism did not significantly impact BAT visualization of clinical FDG-PET/CT images.

  2. Experimental (FT-IR, FT-Raman, 1H, 13C NMR) and theoretical study of alkali metal 2-aminobenzoates

    Science.gov (United States)

    Samsonowicz, M.; Świsłocka, R.; Regulska, E.; Lewandowski, W.

    2008-09-01

    The influence of lithium, sodium, potassium, rubidium and cesium on the electronic system of the 2-aminobenzoic acid was studied by the methods of molecular spectroscopy. The vibrational (FT-IR, FT-Raman) and NMR ( 1H and 13C) spectra for 2-aminobenzoic acid and its alkali metal salts were recorded. The assignment of vibrational spectra was done on the basis of literature data, theoretical calculations and our previous experience. Characteristic shifts of bands and changes in intensities of bands along the metal series were observed. The changes of chemical shifts of protons ( 1H NMR) and carbons ( 13C NMR) in the series of studied alkali metal 2-aminobenzoates were observed too. Optimized geometrical structures of studied compounds were calculated by B3LYP method using 6-311++G ∗∗ basis set. Geometric aromaticity indices, dipole moments and energies were also calculated. The theoretical wavenumbers and intensities of IR and Raman spectra were obtained. The calculated parameters were compared to experimental characteristic of studied compounds.

  3. Do TSH, FT3, and FT4 Impact BAT Visualization of Clinical FDG-PET/CT Images?

    Science.gov (United States)

    Nishii, Ryuichi; Nagamachi, Shigeki; Mizutani, Youichi; Terada, Tamasa; Kiyohara, Syogo; Wakamatsu, Hideyuki; Fujita, Seigo; Higashi, Tatsuya; Yoshinaga, Keiichiro; Saga, Tsuneo; Hirai, Toshinori

    2018-01-01

    We retrospectively analyzed activated BAT visualization on FDG-PET/CT in patients with various conditions and TH levels to clarify the relationships between visualization of BAT on FDG-PET/CT and the effect of TH. Patients who underwent clinical FDG-PET/CT were reviewed and we categorized patients into 5 groups: (i) thyroid hormone withdrawal (THW) group; (ii) recombinant human thyrotropin (rhTSH) group; (iii) hypothyroidism group; (iv) hyperthyroidism group; and (v) BAT group. A total of sixty-two FDG-PET/CT imaging studies in fifty-nine patients were performed. To compare each group, gender; age; body weight; serum TSH, FT3, and FT4 levels; and outside temperature were evaluated. No significant visualization of BAT was noted in any of the images in the THW, rhTSH, hypothyroidism, and hyperthyroidism groups. All patients in the BAT group were in a euthyroid state. When the BAT-negative and BAT-positive patient groups were compared, it was noted that the minimum and maximum temperature on the day of the PET study and maximum temperature of the one day before the PET study were significantly lower in BAT-positive group than in all those of other groups. Elevated TSH condition before RIT, hyperthyroidism, or hypothyroidism did not significantly impact BAT visualization of clinical FDG-PET/CT images.

  4. The effects of acid erosion and remineralization on enamel and three different dental materials: FT-Raman spectroscopy and scanning electron microscopy analysis.

    Science.gov (United States)

    Soares, Luís Eduardo Silva; Soares, Ana Lúcia Silva; De Oliveira, Rodrigo; Nahórny, Sidnei

    2016-07-01

    FT-Raman spectroscopy and scanning electron microscopy (SEM) were employed to test the hypothesis that the beverage consumption or mouthwash utilization would change the chemistry of dental materials and enamel inorganic content. Bovine enamel samples (n = 36) each received two cavity preparations (n = 72), each pair filled with one of three dental materials (R: nanofilled composite resin, GIC: glass-ionomer cement, RMGIC: resin-modified GIC). Furthermore, they were treated with three different solutions (S: artificial saliva, E: erosion/Pepsi Twist or EM: erosion + mouthwash/Colgate Plax). Reduction of carbonate content of enamel was greater in RE than RS (P erosion. Material degradation was greater after E and EM than S. GIC and RMGIC materials had a positive effect against acid erosion in the adjacent enamel after remineralization with mouthwash. The beverage and mouthwash utilization would change R and GIC chemical properties. A professional should periodically monitor the glass-ionomer and resin restorations, as they degrade over time under erosive challenges and mouthwash utilization. Microsc. Res. Tech., 2016. © 2016 Wiley Periodicals, Inc. Microsc. Res. Tech. 79:646-656, 2016. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  5. Hydrogenated fullerenes in space: FT-IR spectra analysis

    International Nuclear Information System (INIS)

    El-Barbary, A. A.

    2016-01-01

    Fullerenes and hydrogenated fullerenes are found in circumstellar and interstellar environments. But the determination structures for the detected bands in the interstellar and circumstellar space are not completely understood so far. For that purpose, the aim of this article is to provide all possible infrared spectra for C 20 and C 60 fullerenes and their hydrogenated fullerenes. Density Functional theory (DFT) is applied using B3LYP exchange-functional with basis set 6–31G(d, p). The Fourier transform infrared spectroscopy (FT-IR) is found to be capable of distinguishing between fullerenes, mono hydrogenated fullerenes and fully hydrogenated fullerenes. In addition, deposition of one hydrogen atom outside the fully hydrogenated fullerenes is found to be distinguished by forming H 2 molecule at peak around 4440 cm −1 . However, deposition of one hydrogen atom inside the fully hydrogenated fullerenes cannot be distinguished. The obtained spectral structures are analyzed and are compared with available experimental results.

  6. Observational information for f(T) theories and dark torsion

    Energy Technology Data Exchange (ETDEWEB)

    Bengochea, Gabriel R., E-mail: gabriel@iafe.uba.a [Instituto de Astronomia y Fisica del Espacio (IAFE), CC 67, Suc. 28, 1428 Buenos Aires (Argentina)

    2011-01-17

    In the present work we analyze and compare the information coming from different observational data sets in the context of a sort of f(T) theories. We perform a joint analysis with measurements of the most recent type Ia supernovae (SNe Ia), Baryon Acoustic Oscillation (BAO), Cosmic Microwave Background radiation (CMB), Gamma-Ray Bursts data (GRBs) and Hubble parameter observations (OHD) to constraint the only new parameter these theories have. It is shown that when the new combined BAO/CMB parameter is used to put constraints, the result is different from previous works. We also show that when we include Observational Hubble Data (OHD) the simpler {Lambda}CDM model is excluded to one sigma level, leading the effective equation of state of these theories to be of phantom type. Also, analyzing a tension criterion for SNe Ia and other observational sets, we obtain more consistent and better suited data sets to work with these theories.

  7. Determination of nutritional parameters of yoghurts by FT Raman spectroscopy

    Science.gov (United States)

    Czaja, Tomasz; Baranowska, Maria; Mazurek, Sylwester; Szostak, Roman

    2018-05-01

    FT-Raman quantitative analysis of nutritional parameters of yoghurts was performed with the help of partial least squares models. The relative standard errors of prediction for fat, lactose and protein determination in the quantified commercial samples equalled to 3.9, 3.2 and 3.6%, respectively. Models based on attenuated total reflectance spectra of the liquid yoghurt samples and of dried yoghurt films collected with the single reflection diamond accessory showed relative standard errors of prediction values of 1.6-5.0% and 2.7-5.2%, respectively, for the analysed components. Despite a relatively low signal-to-noise ratio in the obtained spectra, Raman spectroscopy, combined with chemometrics, constitutes a fast and powerful tool for macronutrients quantification in yoghurts. Errors received for attenuated total reflectance method were found to be relatively higher than those for Raman spectroscopy due to inhomogeneity of the analysed samples.

  8. Study of the deuterated albumin by FT-IR spectroscopy

    International Nuclear Information System (INIS)

    Stoenescu, Daniela; Sahini, V.E.

    2000-01-01

    The albumin is a protein from the soluble or corpuscular protein class, which exists in cells, in dissolved state or in form of a hydrated gel. Proteins are essential constituents beside water, inorganic salts, lipids, carbon hydrates, vitamins, enzymes. The albumin is also a protein soluble in water and in diluted electrolyte solutions (acids, bases and salts). The investigation of the vibration isotopic effect has a great importance both for the diatomic molecules and for the polyatomic molecules. This paper is the first from a series of works which are intended to study the physico-chemical properties of the deuterated albumin and of the albumin solutions in heavy water by an isotopic exchange method. To put in evidence H-D exchange, the FT-IR spectroscopy is used when the deuterated albumin has different layer thickness. It is also of interest to elucidate the isotopic exchange between the hydrogen and oxygen atoms in bovine serum albumin macromolecules. (authors)

  9. 78 FR 54669 - Draft Environmental Impact Statement for the Proposed RES Americas Moapa Solar Energy Center...

    Science.gov (United States)

    2013-09-05

    ... Environmental Impact Statement for the Proposed RES Americas Moapa Solar Energy Center, Clark County, Nevada... environmental impact statement (DEIS) for the proposed RES Americas Moapa Solar Energy Center on the Moapa River... Progress and on the following Web site: www.MoapaSolarEnergyCenterEIS.com . In order to be fully considered...

  10. Res Publica kõrvaldas mässaja / Kristjan Roos

    Index Scriptorium Estoniae

    Roos, Kristjan, 1978-

    2005-01-01

    Tallinna linnavolikogu Res Publica fraktsiooni juhi kohalt, Res Publica Tallinna piirkonna juhatusest ja erakonna eestseisusest end taandanud Toomas Tautsi sõnul esitati talle erakonna eestseisuses mitmeid süüdistusi, mis kokkuvõtvalt olid etteheited tema vastuseisule võimalikule koalitsioonile Keskerakonnaga. Lisa: Abilinnapeadeks saavad Promm, Reivik ja Pevkur

  11. Res Publica Ida-Viru piirkond valis uue juhatuse / Erik Gamzejev

    Index Scriptorium Estoniae

    Gamzejev, Erik, 1967-

    2002-01-01

    Ilmunud ka: Severnoje Poberezhje 4. dets. lk. 1. Res Publica Ida-Viru piirkonna üldkogul valiti uus juhatus, Vladimir Sarantsevi sõnul oli koosolek enamiku Kohtla-Järve osakonna liikmete arvates õigustühine. Res Publica peasekretäri Tõnis Konsi kommentaare

  12. Res Publica seisab vastu homse arvel elamisele / Siim Männik

    Index Scriptorium Estoniae

    Männik, Siim

    2005-01-01

    Ilmunud ka: Vabariik (venek.) 30. august lk. 1. Res Publica koostab praegu kohalikeks valimisteks nimekirju. Erakond ei plaani korraldada mitte ühte üleriigilist valimiskampaaniat, vaid 120 kohalikku kampaaniat, peale selle on kavas üleriigiline n.-ö. foonikampaania. Lisa: Miks valida Res Publica? Vt. samas: Sisevalimised 1.-3. septembrini

  13. Presidendilossis pidutses ka üks Res Publica liige / Kadri Jakobson

    Index Scriptorium Estoniae

    Jakobson, Kadri, 1970-

    2006-01-01

    SL Õhtulehele presidendilossis toimunud noortepidudest rääkinud neiu on Res Publica liige, kuid tema sõnul pole tema parteiline kuuluvus pidudega seotud. Arvamust avaldavad Res Publica juhatuse liige Andreas Kaju, erakonna esimees Taavi Veskimägi, ERL-i pressiesindaja Agu Uudelepp jt.

  14. Res Publica mängis topeltmängu / Risto Berendson

    Index Scriptorium Estoniae

    Berendson, Risto, 1975-

    2005-01-01

    Res Publica jätkab koostööd Tallinna linnavalitsuses Reformierakonnaga. Tallinna linnapea Tõnis Paltsi sõnul oli paralleelsete läbirääkimiste pidamine Keskerakonna ja Reformierakonnaga Res Publica Tallinna piirkonna juhatuse valitud taktika. Kommenteerib Jaanus Piirsalu

  15. Ühendpartei Res Publica tiib oli häältekogumisel Isamaast pisut edukam

    Index Scriptorium Estoniae

    2007-01-01

    Ühenderakonna Res Publica tiiva kandidaadid said Riigikogu valimistel umbes tuhat häält rohkem kui Isamaaliidu tiiva kandidaadid, samas oli IRL-i valimisnimekirjas Res Publica tiiva kandidaate ka mõne inimese võrra rohkem. Isamaaliidu edukaimad hääletoojad

  16. Res Publica lihtliikmed tõrjuvad Veskimäge / Tuuli Koch

    Index Scriptorium Estoniae

    Koch, Tuuli

    2006-01-01

    Ilmunud ka: Pärnu Postimees 17. okt. lk. 6. Isamaa ja Res Publica liidu peaministrikandidaadiks sai Mart Laar, kuid pinged erakondade sees kestavad edasi. Res Publica opositsioon toetab isamaaliitlast Mart Laari ja on Taavi Veskimäe vastu. Lisa: Otsitakse peaministrit

  17. Epidemiology of Chronic Wasting Disease: PrP(res) Detection, Shedding, and Environmental Contamination

    National Research Council Canada - National Science Library

    Williams, Elizabeth S; Miller, Michael W; Lewis, Randolf V; Raisbeck, Merl F; Cook, Walter W

    2004-01-01

    .... The specific goals of these studies are to develop sensitive as says for PrP(exp res) as a marker for infectivity, and use these techniques to monitor the dynamics and modes of shedding of PrP(exp res...

  18. Res Publica nõuab veel üht abilinnapea kohta / Urmas Seaver

    Index Scriptorium Estoniae

    Seaver, Urmas, 1973-

    2005-01-01

    Tallinna linnapea Tõnis Palts on seisukohal, et Reformierakond surus koalitsiooni moodustamisel Res Publicale peale ebaõiglase vastutusvaldkondade jaotuse. Res Publica peasekretär Ott Lumi ei välista võimuliidu loomist Keskerakonnaga, kui Reformierakond järeleandmisi ei tee. ERL tegi ettepaneku kokku kutsuda erakondade ümarlaud. Vt. samas intervjuud Ott Lumiga

  19. 3D-FT MRI of the facial nerve

    International Nuclear Information System (INIS)

    Girard, N.; Raybaud, C.; Poncet, M.

    1994-01-01

    Contrast-enhanced 3D-FT MRI of the intrapetrous facial nerve was obtained in 38 patients with facial nerve disease, using a 1.0 T magnet and fast gradient-echo acquisition sequences. Contiguous millimetric sections were obtained, which could be reformatted in any desired plane. Acutely ill patients, were examined within the first 2 months, included: 24 with Bell's palsy and 6 with other acute disorders (Herpes zoster, trauma, neuroma, meningeal metastasis, middle ear granuloma). Six patients investigated more than a year after the onset of symptoms included 3 with congenital cholesteatoma, 2 with neuromas and one with a chronic Bell's palsy. The lesion was found incidentally in two cases (a suspected neurofibroma and a presumed drop metastasis from an astrocytoma). Patients with tumours had nodular, focally-enhancing lesions, except for the leptomeningeal metastasis in which the enhancement was linear. Linear, diffuse contrast enhancement of the facial nerve was found in trauma, and in the patient with a middle ear granuloma. Of the 24 patients with an acute Bell's palsy 15 exhibited linear contrast enhancement of the facial nerve. Three of these were lost to follow-up, but correlation of clinical outcome and contrast enhancement showed that only 4 of the 11 patients who made a complete recovery and all 10 patients with incomplete recovery demonstrated enhancement. Possible explanations for these findings are suggested by pathological data from the literature. 3D-FT imaging of the facial nerve thus yields direct information about the of the nerve condition and defines the morphological abnormalities. It can also demonstrate contrast enhancement which seems to have some prognostic value in acute idiopathic Bell's palsy. (orig.)

  20. 3D-FT MRI of the facial nerve

    Energy Technology Data Exchange (ETDEWEB)

    Girard, N. (Neuroradiology, Hopital Nord, 13 Marseille (France)); Raybaud, C. (Neuroradiology, Hopital Nord, 13 Marseille (France)); Poncet, M. (Neuroradiology, Hopital Nord, 13 Marseille (France))

    1994-08-01

    Contrast-enhanced 3D-FT MRI of the intrapetrous facial nerve was obtained in 38 patients with facial nerve disease, using a 1.0 T magnet and fast gradient-echo acquisition sequences. Contiguous millimetric sections were obtained, which could be reformatted in any desired plane. Acutely ill patients, were examined within the first 2 months, included: 24 with Bell's palsy and 6 with other acute disorders (Herpes zoster, trauma, neuroma, meningeal metastasis, middle ear granuloma). Six patients investigated more than a year after the onset of symptoms included 3 with congenital cholesteatoma, 2 with neuromas and one with a chronic Bell's palsy. The lesion was found incidentally in two cases (a suspected neurofibroma and a presumed drop metastasis from an astrocytoma). Patients with tumours had nodular, focally-enhancing lesions, except for the leptomeningeal metastasis in which the enhancement was linear. Linear, diffuse contrast enhancement of the facial nerve was found in trauma, and in the patient with a middle ear granuloma. Of the 24 patients with an acute Bell's palsy 15 exhibited linear contrast enhancement of the facial nerve. Three of these were lost to follow-up, but correlation of clinical outcome and contrast enhancement showed that only 4 of the 11 patients who made a complete recovery and all 10 patients with incomplete recovery demonstrated enhancement. Possible explanations for these findings are suggested by pathological data from the literature. 3D-FT imaging of the facial nerve thus yields direct information about the of the nerve condition and defines the morphological abnormalities. It can also demonstrate contrast enhancement which seems to have some prognostic value in acute idiopathic Bell's palsy. (orig.)

  1. Hi-Res scan mode in clinical MDCT systems: Experimental assessment of spatial resolution performance.

    Science.gov (United States)

    Cruz-Bastida, Juan P; Gomez-Cardona, Daniel; Li, Ke; Sun, Heyi; Hsieh, Jiang; Szczykutowicz, Timothy P; Chen, Guang-Hong

    2016-05-01

    The introduction of a High-Resolution (Hi-Res) scan mode and another associated option that combines Hi-Res mode with the so-called High Definition (HD) reconstruction kernels (referred to as a Hi-Res/HD mode in this paper) in some multi-detector CT (MDCT) systems offers new opportunities to increase spatial resolution for some clinical applications that demand high spatial resolution. The purpose of this work was to quantify the in-plane spatial resolution along both the radial direction and tangential direction for the Hi-Res and Hi-Res/HD scan modes at different off-center positions. A technique was introduced and validated to address the signal saturation problem encountered in the attempt to quantify spatial resolution for the Hi-Res and Hi-Res/HD scan modes. Using the proposed method, the modulation transfer functions (MTFs) of a 64-slice MDCT system (Discovery CT750 HD, GE Healthcare) equipped with both Hi-Res and Hi-Res/HD modes were measured using a metal bead at nine different off-centered positions (0-16 cm with a step size of 2 cm); at each position, both conventional scans and Hi-Res scans were performed. For each type of scan and position, 80 repeated acquisitions were performed to reduce noise induced uncertainties in the MTF measurements. A total of 15 reconstruction kernels, including eight conventional kernels and seven HD kernels, were used to reconstruct CT images of the bead. An ex vivo animal study consisting of a bone fracture model was performed to corroborate the MTF results, as the detection of this high-contrast and high frequency task is predominantly determined by spatial resolution. Images of this animal model generated by different scan modes and reconstruction kernels were qualitatively compared with the MTF results. At the centered position, the use of Hi-Res mode resulted in a slight improvement in the MTF; each HD kernel generated higher spatial resolution than its counterpart conventional kernel. However, the MTF along the

  2. Regulatory design for RES-E support mechanisms: Learning curves, market structure, and burden-sharing

    International Nuclear Information System (INIS)

    Batlle, C.; Pérez-Arriaga, I.J.; Zambrano-Barragán, P.

    2012-01-01

    Drawing from relevant experiences in power systems around the world, this paper offers a review of existing policy support mechanisms for RES-E, with a detailed analysis of their regulatory implications. While recent studies provide an account of current RES-E support systems, in this paper we focus on some of the impacts these mechanisms have on the overall energy market structure and its performance. Given the rising importance of RES-E in systems everywhere, these impacts should no longer be overlooked. - Highlights: ► This paper offers a critical review of RES-E support mechanisms and their regulatory implications. ► The discussion focuses on how the different schemes impact the performance of the energy markets. ► We propose to redesign of current RES-E mechanisms to optimize incentives and market performance. ► Our recommendation is also to gradually move from price-based mechanisms to auctions.

  3. Significance of changes of serum FT3, FT4, s-TSH, TGA, TPO-Ab levels in patients with non-Graves' hyperthyroidism and Graves' disease

    International Nuclear Information System (INIS)

    Zhang Lindi; Xu Changde; Xu Huogen; Wang Wei; Zhang Jie; Nie Shufen; Gu Zhenqi; Zeng Jihua

    2006-01-01

    Objective: To investigate the clinical significance of the changes of thyroid-related hormones (FT 3 , FT 4 , s-TSH, TGA, TPO-Ab) levels in patients with Graves' and non-Graves' hyperthyroidism. Methods: Serum FT 3 , FT 4 , TGA, TPO-Ab (with RIA) and s-TSH (with IRMA) were determined in 43 patients with non-Graves' hyperthyroidism, 29 patients with Graves' disease and 40 controls. Results: In both groups of hyperthyroid patients, the serum levels of FT 3 (15.01 ± 11.01 pg/ml in the non - Graves' group and 15.23 ± 9.57pg/ml in the Graves' group), FT 4 (38.30 ± 19.82, 38.87 ± 17.39pg/ml), TGA(33.89 ± 22. 43%, 49.72 ± 20.55% ) and TPO-Ab (1319.24 ± 1037.78, 2023.24 ± 621.00IU/ml) were significantly higher than those (FT 3 , 6.76 ± 2.01pg/ml, FT 4 16.16 ± 2.58pg/ml, TGA 6.76 ± 2.01%, TPO-Ab 0.01 ± 0.01IU/ml) in the controls (all P 3 , FT 4 and s-TSH levels in both groups were not significantly different from each other. Conclusion: In this study, serum TGA and TPO -Ab levels were lower in patients with non-Graves' hyperthyroidism than those in patients with Graves' disease. (authors)

  4. Comparative FT-Raman, FT-IR and colour shifts spectroscopic evaluation of gamma irradiated experimental models of oil paintings

    International Nuclear Information System (INIS)

    Manca, M.M.; Virgolici, M.; Cutrubinis, M.; Moise, I.V.; Ponta, C.C.; Negut, C.D.; Stanculescu, I.R.; Bucharest University

    2011-01-01

    Complete text of publication follows. The present study follows the changes of gamma irradiated historic pigments and experimental models of oil paintings with non-destructive and non-contact spectroscopic analytical techniques which are the only ones accepted by the conservators/restorers community. Molecular structure characterization was performed by FT-IR / Raman spectroscopy using a Bruker Vertex 70 class equipped with two mobile probes: a MIR fibre module for MIR probes (with LN2 cooled detector) and a Raman RAM II module (LN2 Ge detector) with a RAMPROBE fibre. Colour was measured by a portable reflectance spectrophotometer (Miniscan XE Plus, HunterLab) in diffuse/8 deg geometry with a beam diameter of 4 mm and specular component included. Correlations between colour shifts and changes in molecular structure induced by gamma irradiation were further investigated.

  5. FT-IR, FT-Raman, and DFT computational studies of melaminium nitrate molecular-ionic crystal

    Science.gov (United States)

    Tanak, Hasan; Marchewka, Mariusz K.

    2013-02-01

    The experimental and theoretical vibrational spectra of melaminium nitrate were studied. The Raman and infrared (FT-IR) spectra of the melaminium nitrate and its deuterated analogue were recorded in the solid phase. Molecular geometry and vibrational frequency values of melaminium nitrate in the electronic ground state were calculated using the density functional method (B3LYP) with the 6-31++G(d,p) basis set. The calculated results show that the optimized geometry can well reproduce the crystal structure, and the theoretical vibrational frequency values show good agreement with experimental values. The NBO analysis reveals that the N-H···O and N-H···N intermolecular interactions significantly influence crystal packing in this molecule.

  6. RES hyperphagocytosis by rats with streptozotocin-induced diabetes mellitus.

    Science.gov (United States)

    Cornell, R P

    1981-03-01

    In contrast to previous studies of neutrophils from diabetic animals and humans in vitro and of macrophages from diabetic humans in vivo, which reported phagocytic depression, reticuloendothelial system (RES) hyperphagocytosis of colloidal carbon was observed in rats at 14 and 28 days after diabetes induction with streptozotocin (STZ). Carbon clearance half times were significantly enhanced to 6.3 +/- 0.79 and 8.1 +/- 1.04 min at 14 and 28 days post-STZ, respectively, compared with the nondiabetic value (12.7 +/- 0.98 min). The severity of uncontrolled STZ-induced diabetes in rats was confirmed by significant hypoinsulinemia, hyperglucagonemia, hyperglycemia, and hyperlipidemia. Although body weights of STZ-diabetic animals declined progressively, liver weights as a percent of body weight increased above the control value at 14 and 28 days post-STZ. In fact, expression of carbon phagocytosis as the corrected phagocytic index, which accounts for changes in liver and spleen weights relative to body weight, eliminated the significant difference between STZ-diabetic and nondiabetic animals. Antibiotic treatment of diabetic rats failed to alter the hyperphagocytosis, implying that a chronic bacterial infection was not the cause of phagocytic stimulation. Daily insulin replacements, but not a single large insulin dose to 14-day post-STZ rats, reversed the enhanced phagocytosis of colloidal carbon.

  7. Les frontières de la violence au Kenya

    Directory of Open Access Journals (Sweden)

    Claire Médard

    2008-03-01

    Full Text Available Au cours des violences post électorales récentes, au Kenya, de nombreux observateurs ont été surpris par la forme prise par les protestations partisanes. Elle nous rappelle que la fabrique territoriale de l’ethnicité est toujours d’actualité dans ce pays. La réactivation de frontières internes qui portent la marque des violences du passé, certaines héritées de la colonisation et d’autres renégociées depuis l’indépendance, ont mis en péril l’Etat.During the recent post electoral crisis in Kenya, the turn of the protest took many by surprise. We were reminded that the making of ethnicity is on ongoing process in which violence plays a part. New boundaries have appeared, re-enacting old divisions and creating new rifts. Once the mark of administration, internal boundaries now threaten the existence of the State.

  8. Intelligent energy buildings based on RES and nanotechnology

    Energy Technology Data Exchange (ETDEWEB)

    Kaplanis, S., E-mail: kaplanis@teipat.gr; Kaplani, E. [R.E.S. Laboratory, Mechanical Engineering Dept., Technological Educational Institute of Western Greece M. Alexandrou 1, Koukouli 26 334, Patra (Greece)

    2015-12-31

    The paper presents the design features, the energy modelling and optical performance details of two pilot Intelligent Energy Buildings, (IEB). Both are evolution of the Zero Energy Building (ZEB) concept. RES innovations backed up by signal processing, simulation models and ICT tools were embedded into the building structures in order to implement a new predictive energy management concept. In addition, nano-coatings, produced by TiO2 and ITO nano-particles, were deposited on the IEB structural elements and especially on the window panes and the PV glass covers. They exhibited promising SSP values which lowered the cooling loads and increased the PV modules yield. Both pilot IEB units were equipped with an on-line dynamic hourly solar radiation prediction model, implemented by sensors and the related software to manage effectively the energy source, the loads and the storage or the backup system. The IEB energy sources covered the thermal loads via a south façade embedded in the wall and a solar roof which consists of a specially designed solar collector type, while a PV generator is part of the solar roof, like a compact BIPV in hybrid configuration to a small wind turbine.

  9. Cardiovascular Small Heat Shock Protein HSPB7 Is a Kinetically Privileged Reactive Electrophilic Species (RES) Sensor.

    Science.gov (United States)

    Surya, Sanjna L; Long, Marcus J C; Urul, Daniel A; Zhao, Yi; Mercer, Emily J; EIsaid, Islam M; Evans, Todd; Aye, Yimon

    2018-02-08

    Small heat shock protein (sHSP)-B7 (HSPB7) is a muscle-specific member of the non-ATP-dependent sHSPs. The precise role of HSPB7 is enigmatic. Here, we disclose that zebrafish Hspb7 is a kinetically privileged sensor that is able to react rapidly with native reactive electrophilic species (RES), when only substoichiometric amounts of RES are available in proximity to Hspb7 expressed in living cells. Among the two Hspb7-cysteines, this RES sensing is fulfilled by a single cysteine (C117). Purification and characterizations in vitro reveal that the rate for RES adduction is among the most efficient reported for protein-cysteines with native carbonyl-based RES. Covalent-ligand binding is accompanied by structural changes (increase in β-sheet-content), based on circular dichroism analysis. Among the two cysteines, only C117 is conserved across vertebrates; we show that the human ortholog is also capable of RES sensing in cells. Furthermore, a cancer-relevant missense mutation reduces this RES-sensing property. This evolutionarily conserved cysteine-biosensor may play a redox-regulatory role in cardioprotection.

  10. Hydrogen-induced structural transition in single layer ReS2

    Science.gov (United States)

    Yagmurcukardes, M.; Bacaksiz, C.; Senger, R. T.; Sahin, H.

    2017-09-01

    By performing density functional theory-based calculations, we investigate how structural, electronic and mechanical properties of single layer ReS2 can be tuned upon hydrogenation of its surfaces. It is found that a stable, fully hydrogenated structure can be obtained by formation of strong S-H bonds. The optimized atomic structure of ReS2H2 is considerably different than that of the monolayer ReS2 which has a distorted-1T phase. By performing phonon dispersion calculations, we also predict that the Re2-dimerized 1T structure (called 1T {{}\\text{R{{\\text{e}}2}}} ) of the ReS2H2 is dynamically stable. Unlike the bare ReS2 the 1T {{}\\text{R{{\\text{e}}2}}} -ReS2H2 structure which is formed by breaking the Re4 clusters into separated Re2 dimers, is an indirect-gap semiconductor. Furthermore, mechanical properties of the 1T {{}\\text{R{{\\text{e}}2}}} phase in terms of elastic constants, in-plane stiffness (C) and Poisson ratio (ν) are investigated. It is found that full hydrogenation not only enhances the flexibility of the single layer ReS2 crystal but also increases anisotropy of the elastic constants.

  11. Res Publica jäi järjekordselt ilma mitmest nimekast liikmest / Tuuli Koch, Kärt Anvelt

    Index Scriptorium Estoniae

    Koch, Tuuli

    2005-01-01

    Oma lahkumiset Res Publicast teatasid erakonna esimene esimees Rein Taagepera, tema abikaasa Mare Taagepera, akadeemik Jaan Einasto ja 2002. aastal erakonna esimeheks kandideerinud Lauri Aaspõllu. Rein Taagepera põhjendas otsust Res Publica liikumisega paremtsentrist paremäärmusse. Lisa: Tuntud inimesi, kes seni Res Publicast lahkunud. Vt. samas lühiintervjuud Jaan Einastoga: Res Publica peab tegema koostööd

  12. 3-Iodobenzaldehyde: XRD, FT-IR, Raman and DFT studies.

    Science.gov (United States)

    Kumar, Chandraju Sadolalu Chidan; Parlak, Cemal; Tursun, Mahir; Fun, Hoong-Kun; Rhyman, Lydia; Ramasami, Ponnadurai; Alswaidan, Ibrahim A; Keşan, Gürkan; Chandraju, Siddegowda; Quah, Ching Kheng

    2015-06-15

    The structure of 3-iodobenzaldehyde (3IB) was characterized by FT-IR, Raman and single-crystal X-ray diffraction techniques. The conformational isomers, optimized geometric parameters, normal mode frequencies and corresponding vibrational assignments of 3IB were examined using density functional theory (DFT) method, with the Becke-3-Lee-Yang-Parr (B3LYP) functional and the 6-311+G(3df,p) basis set for all atoms except for iodine. The LANL2DZ effective core basis set was used for iodine. Potential energy distribution (PED) analysis of normal modes was performed to identify characteristic frequencies. 3IB crystallizes in monoclinic space group P21/c with the O-trans form. There is a good agreement between the theoretically predicted structural parameters, and vibrational frequencies and those obtained experimentally. In order to understand halogen effect, 3-halogenobenzaldehyde [XC6H4CHO; X=F, Cl and Br] was also studied theoretically. The free energy difference between the isomers is small but the rotational barrier is about 8kcal/mol. An atypical behavior of fluorine affecting conformational preference is observed. Copyright © 2015 Elsevier B.V. All rights reserved.

  13. Hydrogenated fullerenes in space: FT-IR spectra analysis

    Energy Technology Data Exchange (ETDEWEB)

    El-Barbary, A. A. [Physics Department, Faculty of Education, Ain-Shams University, Cairo, Egypt Physics Department, Faculty of Science, Jazan University, Jazan (Saudi Arabia)

    2016-06-10

    Fullerenes and hydrogenated fullerenes are found in circumstellar and interstellar environments. But the determination structures for the detected bands in the interstellar and circumstellar space are not completely understood so far. For that purpose, the aim of this article is to provide all possible infrared spectra for C{sub 20} and C{sub 60} fullerenes and their hydrogenated fullerenes. Density Functional theory (DFT) is applied using B3LYP exchange-functional with basis set 6–31G(d, p). The Fourier transform infrared spectroscopy (FT-IR) is found to be capable of distinguishing between fullerenes, mono hydrogenated fullerenes and fully hydrogenated fullerenes. In addition, deposition of one hydrogen atom outside the fully hydrogenated fullerenes is found to be distinguished by forming H{sub 2} molecule at peak around 4440 cm{sup −1}. However, deposition of one hydrogen atom inside the fully hydrogenated fullerenes cannot be distinguished. The obtained spectral structures are analyzed and are compared with available experimental results.

  14. Statistical analysis of the Ft. Calhoun reactor coolant pump system

    International Nuclear Information System (INIS)

    Heising, Carolyn D.

    1998-01-01

    In engineering science, statistical quality control techniques have traditionally been applied to control manufacturing processes. An application to commercial nuclear power plant maintenance and control is presented that can greatly improve plant safety. As a demonstration of such an approach to plant maintenance and control, a specific system is analyzed: the reactor coolant pumps (RCPs) of the Ft. Calhoun nuclear power plant. This research uses capability analysis, Shewhart X-bar, R-charts, canonical correlation methods, and design of experiments to analyze the process for the state of statistical control. The results obtained show that six out of ten parameters are under control specifications limits and four parameters are not in the state of statistical control. The analysis shows that statistical process control methods can be applied as an early warning system capable of identifying significant equipment problems well in advance of traditional control room alarm indicators Such a system would provide operators with ample time to respond to possible emergency situations and thus improve plant safety and reliability. (author)

  15. Statistical analysis of the Ft. Calhoun reactor coolant pump system

    International Nuclear Information System (INIS)

    Patel, Bimal; Heising, C.D.

    1997-01-01

    In engineering science, statistical quality control techniques have traditionally been applied to control manufacturing processes. An application to commercial nuclear power plant maintenance and control is presented that can greatly improve plant safety. As a demonstration of such an approach, a specific system is analyzed: the reactor coolant pumps (RCPs) of the Ft. Calhoun nuclear power plant. This research uses capability analysis, Shewhart X-bar, R charts, canonical correlation methods, and design of experiments to analyze the process for the state of statistical control. The results obtained show that six out of ten parameters are under control specification limits and four parameters are not in the state of statistical control. The analysis shows that statistical process control methods can be applied as an early warning system capable of identifying significant equipment problems well in advance of traditional control room alarm indicators. Such a system would provide operators with ample time to respond to possible emergency situations and thus improve plant safety and reliability. (Author)

  16. Breast cancer diagnosis using FT-RAMAN spectroscopy

    Science.gov (United States)

    Bitar, Renata A.; Martin, Airton A.; Criollo, Carlos J. T.; Ramalho, Leandra N. Z.

    2005-04-01

    In this study FT-RAMAN spectra of breast tissue from 35 patients were obtained and separated into nine groups for histopathologic analysis, which are as follows: normal breast tissue, fibrocystic condition, in situ ductal carcinoma, in situ ductal carcinoma with necrosis, infiltrate ductal carcinoma, infiltrate inflammatory ductal carcinoma, infiltrate medullar ductal carcinoma, infiltrate colloid ductal carcinoma, and infiltrate lobular carcinoma. Using spectrum averages taken from each group a qualitative analysis was performed to compare these molecular compositions to those known to be present in abnormal concentrations in pathological situations, e.g. the development of desmoplastic lesions with a stroma of dense collagen in tumoral breast tissues which substitute adipose stroma of non-diseased breast tissue. The band identified as amino acids, offered basis for observation in the existence of alterations in the proteins, thus proving Raman Spectroscopic capacity in identification of primary structures of proteins; secondary protein structure was also identified through the peptic links, Amide I and Amide III, which have also been identified by various authors. Alterations were also identified in the peaks and bandwidths of nucleic acids demonstrating the utilization of Raman Spectroscopy in the analysis of the cells nucleus manifestations. All studies involving Raman Spectroscopy and breast cancer have shown excellent result reliability and therefore a basis for the technical theory.

  17. Gestão integrada de resíduos : o impacto ambiental

    OpenAIRE

    Oliveira, Rosário

    2004-01-01

    Faz-se uma introducão à politica de gestão integrada de resíduos para enquadrar a valorização de resíduos como política desejável para assegurar um desenvolvimento sustentado. Referem-se de seguida metodologias para avaliação do impacto ambiental da utilização de resíduos que possam ser usados como materiais de construção civil e obras públicas, ressalvando-se alguma falta de enquadramento legal.

  18. Dynamique de fréquentation des grands mammifères dans une ...

    African Journals Online (AJOL)

    SARAH

    31 juil. 2016 ... RÉSUMÉ. Objectifs : Dans le but de connaitre les animaux fréquentant les clairières (ou Baï) forestières au Gabon, une étude sur la fréquentation du Baï de Momba par les grands mammifères a été conduite durant la petite saison des pluies pendant deux mois du 19 février au 13 mars 2012. Méthodologie ...

  19. Res Publicat on täna vaja rohkem kui kunagi varem / Taavi Veskimägi

    Index Scriptorium Estoniae

    Veskimägi, Taavi, 1974-

    2005-01-01

    Res Publica esimees seab erakonnale ülesandeks selgitada inimestele, et Res Publicat võib usaldada. Ta selgitab, et Res Publica parempoolne poliitika tähendab ka hoolimist nendest, kes ei saa endaga hakkama. Vt. samas: Viimased kampaaniapäevad

  20. Diagnóstico dos resíduos sólidos do setor agrossilvopastoril : resíduos sólidos inorgânicos

    OpenAIRE

    Rosseto, Renato

    2013-01-01

    Este trabalho buscou realizar o diagnóstico preliminar dos resíduos sólidos inorgânicos gerados no setor agrossilvopastoril, especialmente nos segmentos de agrotóxicos, fertilizantes, insumos farmacêuticos veterinários, além dos resíduos sólidos domésticos (RSDs) rurais Os assuntos foram separados em seções. De forma geral, a ausência de informações oficiais sistematizadas seguiu como a principal dificuldade em realizar o diagnóstico dos resíduos sólidos inorgânicos presentes no setor agrossi...

  1. Monitoring lipase-catalyzed interesterification for bulky fats modification with FT-IR/NIR spectroscopy

    DEFF Research Database (Denmark)

    Chang, Tinghong; Lai, Xuxin; Zhang, Hong

    2005-01-01

    This work demonstrates the application of FT-IR and FT-NIR spectroscopy to monitor the enzymatic interesterification process for bulky fat modification. The reaction was conducted between palm stearin and coconut oil (70/30, w/w) with the catalysis of Lipozyme TL IM at 70°C in a batch reactor...

  2. Res Publica ja Isamaaliit ühendavad jõud / Urmo Kübar, Rauno Veri

    Index Scriptorium Estoniae

    Kübar, Urmo, 1978-

    2006-01-01

    Res Publica esimees Taavi Veskimägi ja Isamaaliidu esimees Tõnis Lukas kirjutasid alla ühiste kavatsuste deklaratsioonile, milles nad teevad ettepaneku moodustada ühine erakond. Lisad: Erakonna Eesti Eest deklaratsioon; Lühiülevaade ajaloost

  3. Res Publica üldkogu hääletab poliitilisi resolutsioone / Lauri Tankler

    Index Scriptorium Estoniae

    Tankler, Lauri

    2004-01-01

    Res Publica üldkogul hääletusele pandavate resolutsioonide eesmärgiks on teavitada avalikkust erakonna seisukohtadest. Olulisemad resolutsioonid on ette valmistatud ideoloogia, majanduse, hariduse ja sotsiaalpoliitika valdkonnas

  4. RES-E Support Policies In The Baltic States: Development Aspect (Part I

    Directory of Open Access Journals (Sweden)

    Bobinaite V.

    2015-02-01

    Full Text Available Despite quite similar conditions (natural resources for electricity production from renewable energy sources (RES-E in three Baltic States (Estonia, Latvia and Lithuania, significant differences exist in these countries as to the RES-E production volume. In Latvia this volume is the highest, while in Estonia and Lithuania it is half as high. One of the factors that determine the RES-E production volumes is support policies, which in the Baltic States are different. The main objective of this work was to analyze and compare these support policies. The results have shown that for rapid RES-E development the most effective policy is to be market-oriented (as in Estonia, whereas for more stable development such policy should be producer-oriented (as in Lithuania.

  5. Res Publica nõuab Leinatammelt 44 600 krooni / Kadri Jakobson

    Index Scriptorium Estoniae

    Jakobson, Kadri, 1970-

    2005-01-01

    Res Publica nõuab Reformierakonda üle läinud Tarmo Leinatammelt maksmata jäänud liikmemaksu, fraktsioon kutsub teda üles loobuma kohast Riigikogus. Erakonna pressiesindaja Riina Vändre selgitus

  6. Res Publica tahab muuta Riigikogu kuluhüvitiste süsteemi / Alari Rammo

    Index Scriptorium Estoniae

    Rammo, Alari

    2003-01-01

    Riigikogu Res Publica fraktsiooni ettepanekutest reformida Riigikogu liikmetele ette nähtud kuluhüvitiste süsteemi. Tabel: Kasutatud kuluhüvitised seisuga 15. oktoober 2003. Kommenteerib Urmo Kübar

  7. Rationales for technology-specific RES support and their relevance for German policy

    International Nuclear Information System (INIS)

    Gawel, Erik; Lehmann, Paul; Purkus, Alexandra; Söderholm, Patrik; Witte, Katherina

    2017-01-01

    In order to achieve cost-effective RES-E deployment it is often argued that technology-neutral support schemes for renewables are indispensable. Against this background, RES-E support policies making widely use of technology differentiation in remuneration settings, e.g. across the EU, are frequently criticized from a theoretical point of view. However, in this paper we provide a systematic critique of the technology neutrality concept as a foundation for designing policy support schemes in the RES-E technology field. Specifically, the main objective of the paper is to scrutinize the arguments for technology-neutrality, and discuss three conceptual arguments for why technology-specific support schemes could in fact help minimize the societal costs of reaching future RES-E targets. We also briefly address different political economy concerns, which could constrain the choice of cost-effective policy support schemes, and that have to be taken into account for economic policy advice. For empirical illustration of the key arguments we refer to the case of German RES-E policy-making. The central conclusion from this paper is that technology-specific RES-E support schemes may generate significant economic benefits, particularly if technology markets work imperfectly and in second-best policy settings with additional non-internalized market failures. - Highlights: • Three theoretical cost-effectiveness reasons for technology-specific RES-E support. • German case study to show relevance of theoretical arguments for policy-making. • Political economy constraints to technology-neutral support are demonstrated. • Technology-specific RES-E support may generate significant economic benefits.

  8. Comment rendre les villes plus sûres | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    29 oct. 2015 ... À mi-chemin d'un programme quinquennal de recherche, les experts qui travaillent à l'initiative Villes sûres et inclusives font la lumière sur ce qui fonctionne – et ne fonctionne pas – pour rendre les villes plus sûres. Le présent compte rendu présente certains enseignements tirés de leur travail, ainsi que ...

  9. Ressources minières en Afrique : Quelle réglementation pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ressources minières en Afrique : Quelle réglementation pour le développement ? Couverture du livre Ressources minières en Afrique : Quelle réglementation pour le développement ? Directeur(s):. Bonnie Campbell. Maison(s) d'édition: Presses de l'Université du Québec, CRDI. 6 juillet 2009. ISBN : 9782760525214.

  10. The performances of standard and ResMed masks during bag-valve-mask ventilation.

    Science.gov (United States)

    Lee, Hyoung Youn; Jeung, Kyung Woon; Lee, Byung Kook; Lee, Seung Joon; Jung, Yong Hun; Lee, Geo Sung; Min, Yong Il; Heo, Tag

    2013-01-01

    A tight mask seal is frequently difficult to obtain and maintain during single-rescuer bag-valve-mask (BVM) ventilation. The ResMed mask (Bella Vista, NSW, Australia) is a continuous-positive-airway-pressure mask (CM) designed for noninvasive ventilation. In this study, we compared the ventilation performances of a standard mask (SM) and a ResMed CM using a simulation manikin in an out-of-hospital single-rescuer BVM ventilation scenario. Thirty emergency medical technicians (EMTs) performed two 2-minute attempts to ventilate a simulation manikin using BVM ventilation, alternatively, with the SM or the ResMed CM in a randomized order. Ventilation parameters including tidal volume and peak airway pressure were measured using computer analysis software connected to the simulation manikin. Successful volume delivery was defined as delivery of 440-540 mL of tidal volume in accord with present cardiopulmonary resuscitation guidelines. BVM ventilation using the ResMed CM produced higher mean (± standard deviation) tidal volumes (452 ± 50 mL vs. 394 ± 113 mL, p = 0.014) and had a higher proportion of successful volume deliveries (65.3% vs. 26.7%, p < 0.001) than that using the SM. Peak airway pressure was higher in BVM ventilation using the ResMed CM (p = 0.035). Stomach insufflation did not occur during either method. Twenty-nine of the participants (96.7%) preferred BVM ventilation using the ResMed CM. BVM ventilations using ResMed CM resulted in a significantly higher proportion of successful volume deliveries meeting the currently recommended range of tidal volume. Clinical studies are needed to determine the value of the ResMed CM for BVM ventilation.

  11. Isamaa ja Res Publica liit tõotab neile kõrget kohta edetabelis / Rasmus Kagge

    Index Scriptorium Estoniae

    Kagge, Rasmus, 1977-

    2006-01-01

    Ilmunud ka: Postimees : na russkom jazõke 10. apr. lk. 7. TNS Emori märtsikuu erakondade populaarsusuuringu tulemused näitavad, et Res Publicaga liituda otsustanud Isamaaliit on tõusnud poliitedetabelis kolmandale kohale. Res Publica reiting on endiselt madal, edetabelit juhib Keskerakond. Diagrammid: Isamaaliit kogub toetajaid tõusvas tempos. Vt. samas: Ühendpartei Eesti Eest! otsib endale uut nime

  12. FT overexpression induces precocious flowering and normal reproductive development in Eucalyptus.

    Science.gov (United States)

    Klocko, Amy L; Ma, Cathleen; Robertson, Sarah; Esfandiari, Elahe; Nilsson, Ove; Strauss, Steven H

    2016-02-01

    Eucalyptus trees are among the most important species for industrial forestry worldwide. However, as with most forest trees, flowering does not begin for one to several years after planting which can limit the rate of conventional and molecular breeding. To speed flowering, we transformed a Eucalyptus grandis × urophylla hybrid (SP7) with a variety of constructs that enable overexpression of FLOWERING LOCUS T (FT). We found that FT expression led to very early flowering, with events showing floral buds within 1-5 months of transplanting to the glasshouse. The most rapid flowering was observed when the cauliflower mosaic virus 35S promoter was used to drive the Arabidopsis thaliana FT gene (AtFT). Early flowering was also observed with AtFT overexpression from a 409S ubiquitin promoter and under heat induction conditions with Populus trichocarpa FT1 (PtFT1) under control of a heat-shock promoter. Early flowering trees grew robustly, but exhibited a highly branched phenotype compared to the strong apical dominance of nonflowering transgenic and control trees. AtFT-induced flowers were morphologically normal and produced viable pollen grains and viable self- and cross-pollinated seeds. Many self-seedlings inherited AtFT and flowered early. FT overexpression-induced flowering in Eucalyptus may be a valuable means for accelerating breeding and genetic studies as the transgene can be easily segregated away in progeny, restoring normal growth and form. © 2015 Society for Experimental Biology, Association of Applied Biologists and John Wiley & Sons Ltd.

  13. Biossorção de azul de metileno utilizando resíduos agroindustriais

    Directory of Open Access Journals (Sweden)

    Andressa C. Honorato

    2015-07-01

    Full Text Available O presente trabalho avaliou a capacidade de adsorção do corante azul de metileno nos resíduos da palha de milho e da bainha do palmito pupunha in natura. A caracterização dos resíduos foi determinada utilizando-se a microscopia eletrônica de varredura e espectroscopia na região do infravermelho a qual indicou a presença de grupos carboxílicos, hidroxila e carbonila. O tempo necessário para que o sistema atingisse o equilíbrio para ambos os resíduos foi de 240 min, seguindo uma cinética descrita pelo modelo de pseudo-segunda ordem. A capacidade máxima de adsorção foi de 102,8 mg g-1 para o resíduo da palha de milho, seguindo o modelo de isoterma de Langmuir e 50,9 mg g-1 para o resíduo de palmito pupunha, sendo que o modelo que melhor se ajusta foi Freundlich. Desta forma, esses resíduos são promissores para a adsorção do corante azul de metileno em efluentes.

  14. Revisiting long-run relations in power markets with high RES penetration

    International Nuclear Information System (INIS)

    Gianfreda, Angelica; Parisio, Lucia; Pelagatti, Matteo

    2016-01-01

    Electricity generation from renewable energy resources (RES) has become increasingly significant to reach EU and emissions reduction targets. At the same time, one of the main EU policy goals has been the creation of a common internal energy market for Europe. In this paper, we focus on these two issues previously studied separately, considering their possible interactions. We first analyze the long-run relationship between day-ahead electricity prices and fuel prices (natural gas and coal) looking at two samples of years characterized by low and high RES penetration, then we explore the integration of EU markets. We show that the electricity–fuel nexus found over 2006–2008 changed dramatically over 2010–2014 for the majority of countries considered. In particular, the long-run dependence of electricity from gas and coal prices is much lower in recent years. Furthermore, our results confirm that the considered EU countries are becoming less integrated as RES-E increases. Our findings suggest that nationally implemented policies to support renewables are successful in increasing RES penetration, but they have lessened the linkage among EU markets, then making integration more difficult to obtain. - Highlights: •RES lower the intra-daily electricity dependence from coal and natural gas. •RES affect the EU wholesale electricity market integration, studied at hourly level. •Overlapping national and supranational policies tackle the achievement of EU targets. •Strong policy coordination is required to avoid that the “greens” promote the “dirtiest”.

  15. Mastery of Content Representation (CoRes) Related TPACK High School Biology Teacher

    Science.gov (United States)

    Nasution, W. R.; Sriyati, S.; Riandi, R.; Safitri, M.

    2017-09-01

    The purpose of this study was to determine the mastery of Content Representation (CoRes) teachers related to the integration of technology and pedagogy in teaching Biology (TPACK). This research uses a descriptive method. The data were taken using instruments CoRes as the primary data and semi-structured interviews as supporting data. The subjects were biology teacher in class X MIA from four schools in Bandung. Teachers raised CoRes was analyzed using a scoring rubric CoRes with coding 1-3 then categorized into a group of upper, middle, or lower. The results showed that the two teachers in the lower category. This results means that the control of teachers in defining the essential concept in the CoRes has not been detailed and specific. Meanwhile, two other teachers were in the middle category. This means that the ability of teachers to determine the essential concepts in the CoRes are still inadequate so that still needs to be improved.

  16. Epitaxial growth of ReS2(001) thin film via deposited-Re sulfurization

    Science.gov (United States)

    Urakami, Noriyuki; Okuda, Tetsuya; Hashimoto, Yoshio

    2018-02-01

    In this paper, we present the formation of large-size rhenium disulfide (ReS2) films via the sulfurization of Re films deposited on sapphire substrates. The effects of sulfurization temperature and pressure on the crystal quality were investigated. A [001]-oriented single crystal of ReS2 films with 6 × 10 mm2 area was realized. By sulfurizing Re films at 1100 °C, ReS2 films with well-defined sharp interfaces to c-plane sapphire substrates could be formed. Below and above the sulfurization temperature of 1100 °C, incomplete sulfurization and film degradation were observed. The twofold symmetry of the monocrystalline in-plane structure composed of Re-Re bonds along with Re-S bonds pointed to a distorted 1T structure, indicating that this structure is the most stable atomic arrangement for ReS2. For a S/Re compositional ratio equal to or slightly lower than 2.0, characteristic Raman vibrational modes with the narrowest line widths were observed. The typical absorption peak of ReS2 can be detected at 1.5 eV.

  17. Characterization of additives typically employed in EPDM formulations by using FT-IR of gaseous pyrolyzates

    Directory of Open Access Journals (Sweden)

    Natália Beck Sanches

    2014-06-01

    Full Text Available In this study, Fourier transform infrared spectroscopy (FT-IR was employed to investigate the gaseous pyrolysis products of ethylene - propylene - diene rubber (EPDM. The objective was to evaluate the potential of FT-IR analysis of gaseous pyrolyzates (PY-G/FT-IR for characterization of EPDM additives. Two EPDM formulations, containing additives typically employed in EPDM rubbers, were analyzed. Initially, gaseous pyrolysis products from paraffin oil, stearic acid, 2,2,4-trimethyl-1,2-dihydroquinoline, tetramethylthiuram monosulfide (TMTM, tetramethylthiuram disulfide (TMTD, and 2-mercaptobenzothiazole (MBT were characterized separately, and their main absorptions were identified. Subsequently, the gaseous pyrolysis products of raw, unvulcanized, and vulcanized EPDM formulations were analyzed. The similarities observed in the FT-IR spectra of unvulcanized and vulcanized EPDM show that the vulcanization process does not interfere with the pyrolysis products. The identification of the functional groups of the studied additives was possible in both unvulcanized and vulcanized EPDM samples, without solvent extraction. Results also demonstrate that the PY-G/FT-IR technique can identify additives containing sulfur in concentrations as low as 1.4 phr (1.26% in both unvulcanized and vulcanized EPDM. However, the method showed some limitation due to overlapping and to similarities of TMTM and TMTD PY-G/FT-IR spectra, which could not be distinguished from each other. The PY-G/FT-IR technique is a faster and cheaper alternative to the sophisticated techniques usually applied to detection of additives in rubbers.

  18. Psychological trauma and help seeking behaviour amongst resettled Iraqi refugees in attending English tuition classes in Australia.

    Science.gov (United States)

    Slewa-Younan, Shameran; Mond, Jonathan M; Bussion, Elise; Melkonian, Maral; Mohammad, Yaser; Dover, Hanan; Smith, Mitchell; Milosevic, Diana; Jorm, Anthony Francis

    2015-01-01

    To examine levels of psychological distress and help seeking behaviour in resettled refugees attending English tuition classes in Australia, and their associations with participants' demographic characteristics. Data was collected by bilingual interviewers between March and November 2013. A volunteer sample of attendees of Adult Migrant English Programs (AMEP) in Western Sydney were recruited. Participants were two hundred and twenty five Iraqi refugees resettled in Western Sydney, who had left Iraq no earlier than 1991, were fluent in Arabic and/or English, and were between the ages of 18 and 70. The chief outcome measures used were the Kessler Psychological Distress Scale (K-10) as well as The Harvard Trauma Questionnaire (HTQ). On the K-10, 39.8% of participants had severe psychological distress, 19.4% moderate distress, and 40.7% had low to mild distress. Ninety-five percent of participants reported having experienced one or more potentially traumatic event (PTE) as defined by the HTQ prior to leaving Iraq, with a mean of 14.28 events (SD = 8.69). Thirty-one percent of participants met the threshold (≥2.5) for clinically significant PTSD symptomatology, with a significantly higher occurrence among participants with lower education attainment (χ (2) (3) = 8.26, p = .04). Of those participants with clinically significant PTSD symptomatology according to the HTQ, only 32.9% reported ever having ever sought help for a mental health problem. The high level of distress found in this sample, combined with low uptake of mental health care, highlights the need for programs targeted to promote help-seeking among Iraqi refugees who have resettled in Australia. Further, the higher level of PTSD symptomatology found amongst those with lower education attainment has mental health promotion and treatment implications. Specifically, in designing service and treatment programs, consideration should be given to the possible impact excessive levels of psychological

  19. Measurement of serum free thyroxine using fT4(fraction) determined by solidphase radioimmunoassay: First clinical results

    International Nuclear Information System (INIS)

    Reiners, C.; Walter, H.; Moll, E.; Boerner, W.

    1983-01-01

    The novel solidphase RIA SPAC ET permits the simultaneous determination of TF 4 , TT 4 and fT 4 -fraction. The duration until the complete results of this assay can be obtained is a little bit less than for parallel radioimmunologic FT 4 - and TT 4 -determinations. The results of our quality control survey indicate that the precision of the precommercial kits tested should be improved. In addition, the normal range of FT 4 from 5.5 pg/ml to 12.5 pg/ml should be adapted in the final assay version of the approximately 30% higher normal ranges which are common with alternative FT 4 -radioimunoassays. In comparison to FT 4 -I, TT 4 /TBG-ratio and other FT 4 -radioimmunoassays, the diagnostic accuracy of FT 4 determined by SPAC ET is equally good. Estrogen-mediated TBG elevations on oral contraceptives are well compensated. In pregnancy, the known tendency towards lower FT 4 levels can be seen with the beginning of the second trimester. While there are no changes of FT 4 levels on medication with acetylosalicyclic acid, a slight tendency towards lower FT 4 determined by SPAC ET can be seen on therapy with phenytoin. Under treatment with heparin, FT 4 by SPAC ET is elevated. This is more reasonable than the decreases of FT 4 concentrations observed with radioimmunoassays using FT 4 analogues as tracers. RIA SPAC ET is an interesting alternative to routinely used direct and indirect methods for determination of free thyroxine. (orig.) [de

  20. Molecular Characterization of FT and FD homologs from Eriobotrya deflexa Nakai forma koshunensis

    Directory of Open Access Journals (Sweden)

    Ling eZhang

    2016-01-01

    Full Text Available In angiosperms, regulation of flowering is a vital process for successful reproduction. To date, the molecular mechanism of flowering is well studied in the model plant, Arabidopsis, in which key genes such as FLOWERING LOCUST (FTor FD have been identified to regulate flowering. However, the flowering mechanisms are still largely unknown in fruit trees like loquat. To this end, we first cloned one FT- and two FD-like genes from the loquat (E. deflexa Nakai f. koshunensis and referred to as EdFT, EdFD1 and EdFD2, respectively. Phylogenetic analysis has shown that EdFT, EdFD1 and EdFD2 are conserved during the evolution process. EdFT is mainly expressed in reproductive tissues (e.g. flower buds, flowers and fruits, while EdFD1 and EdFD2 are mainly expressed in apical buds including leaf buds and flower buds. EdFT is localized in the whole cell, while EdFD1 or EdFD2 is localized in the nucleus. Ectopic expression of EdFT, EdFD1 and EdFD2 in Arabidopsis results in early flowering. In addition, we have also revealed that the EdFT interacts with both EdFD1 and EdFD2. Overall, these data suggest that the EdFT, EdFD1 and EdFD2 are the functional homologs of FT and FD, respectively, which might act together to regulate loquat flowering through a similar mechanism found in Arabidopsis.

  1. Is FT3 by radioligandassay (RLA) superior in the diagnosis of hyperthyroidism (HT)

    Energy Technology Data Exchange (ETDEWEB)

    Bottger, I.G.; Pabst, H.W.

    1985-05-01

    Based upon our routine experience with more than 50,000/15,000 patients having been examined by FT4/FT3 RLA the authors reported a comparable clinical value of routine parameters for free thyroid hormones. The purpose of this study was to investigate the clinical performance of FT3 by RLA in borderline HT (BHT) in more detail. Two groups of patients were studied prospectively: group I: BHT, 48 sera, HT was suspected on grounds of clinical, scintigraphical and ultrasonic findings, no therapy. Subgroup Ia: negative TRH test (TSH before and after 200 ..mu..g TRH i.v. 0.8 mU/1), T4, FT4, T4/TBG ratio and T3 in the normal range (NR), 22 sera. Subgroup Ib: T3 (NR: 1.6 - 3.6 pmol/1): 3.7 - 3.9 and/or FT4 and/or T4/TBG ratio elevated, 26 sera. Group II: thyroid ablated patients with thyroid carcinoma on TSH-suppressive 1-T4 medication (200 ..mu..g/day) with a negative TRH test, no obvious symptoms of HT, T3 normal. RLAs employed routinely: FT4/T4 and FT3/T3 (kinetic, two-tube), and TBG, Corning Medical, TSH, Henning-Berlin. Group I: T3 levels were in the middle to upper NR, 9 (19 %) of Ib being elevated, T3/TBG was predominantly at the upper limit of the NR, 20 (42%) of this group and 5 (10%) of Ia being increased. 29 (60%) of the FT3 levels in I and 8 (17%) in Ia were elevated up to 15 and 13 pmol/l, respectively. Group II: the T3/TBG ratio was increased in 13 (11%) and the FT3 concentration up to 14 pmol/l in 57 (50%) sera.

  2. Is FT3 by radioligandassay (RLA) superior in the diagnosis of hyperthyroidism (HT)

    International Nuclear Information System (INIS)

    Bottger, I.G.; Pabst, H.W.

    1985-01-01

    Based upon our routine experience with more than 50,000/15,000 patients having been examined by FT4/FT3 RLA the authors reported a comparable clinical value of routine parameters for free thyroid hormones. The purpose of this study was to investigate the clinical performance of FT3 by RLA in borderline HT (BHT) in more detail. Two groups of patients were studied prospectively: group I: BHT, 48 sera, HT was suspected on grounds of clinical, scintigraphical and ultrasonic findings, no therapy. Subgroup Ia: negative TRH test (TSH before and after 200 μg TRH i.v. 0.8 mU/1), T4, FT4, T4/TBG ratio and T3 in the normal range (NR), 22 sera. Subgroup Ib: T3 (NR: 1.6 - 3.6 pmol/1): 3.7 - 3.9 and/or FT4 and/or T4/TBG ratio elevated, 26 sera. Group II: thyroid ablated patients with thyroid carcinoma on TSH-suppressive 1-T4 medication (200 μg/day) with a negative TRH test, no obvious symptoms of HT, T3 normal. RLAs employed routinely: FT4/T4 and FT3/T3 (kinetic, two-tube), and TBG, Corning Medical, TSH, Henning-Berlin. Group I: T3 levels were in the middle to upper NR, 9 (19 %) of Ib being elevated, T3/TBG was predominantly at the upper limit of the NR, 20 (42%) of this group and 5 (10%) of Ia being increased. 29 (60%) of the FT3 levels in I and 8 (17%) in Ia were elevated up to 15 and 13 pmol/l, respectively. Group II: the T3/TBG ratio was increased in 13 (11%) and the FT3 concentration up to 14 pmol/l in 57 (50%) sera

  3. Functional correlates of TSH, fT3 and fT4 in Alzheimer disease: a F-18 FDG PET/CT study.

    Science.gov (United States)

    Chiaravalloti, Agostino; Ursini, Francesco; Fiorentini, Alessandro; Barbagallo, Gaetano; Martorana, Alessandro; Koch, Giacomo; Tavolozza, Mario; Schillaci, Orazio

    2017-07-24

    The present study was aimed to investigate the relationships between thyroid stimulating hormone (TSH), freeT3 (fT3) and freeT4 (fT4) and brain glucose consumption as detectable by means of 2-deoxy-2-(F-18) fluoro-D-glucose (F-18 FDG) Positron Emission Tomography/Computed Tomography (PET/CT) in a selected population with Alzheimer disease (AD). We evaluated 87 subjects (37 males and 50 females, mean age 70 (±6) years old) with AD. All of them were subjected to TSH, fT3 and fT4 assay and to cerebrospinal fluid amyloid (Aβ1-42) and tau [phosphorylated-tau (p-tau) and total-tau (t-tau)] assay prior PET/CT examination. Values for TSH, fT3 and fT4 were in the normal range. The relationships were evaluated by means of statistical parametric mapping (SPM8) using age, sex, MMSE, scholarship and CSF values of amyloid and tau as covariates. We found a significant positive correlation between TSH values and cortical glucose consumption in a wide portion of the anterior cingulate cortex bilaterally (BA32) and left frontal lobe (BA25) (p FWE-corr <0.001; p FDRcorr <0.000; cluster extent 66950). No significant relationships were found between cortical F-18 FDG uptake and T3 and T4 serum levels. The results of our study suggest that a cortical dysfunction in anterior cingulate and frontal lobes may affect serum values of TSH in AD patients.

  4. An exploratory study of human teeth enamel by using Ft-Raman spectroscopy

    International Nuclear Information System (INIS)

    Afishah Alias; Siti Rahayu Mohd Hashim; Mihaly, Judith; Julyannie Wajir; Fauziah Abdul Aziz

    2009-01-01

    Unaffected , affected and heavily affected teeth enamel were studied by using FT-Raman spectroscopy. The 14 permanent teeths enamel surface were measured randomly, resulting in total n = 43 FT-Raman spectra. The results obtained from FT-Raman spectra of heavily affected, affected and unaffected tooths enamel surfaces did not show any significant difference. In this study, Kruskal-Wallis and Wilcoxon rank sum tests were used to compare the intensity between the categories of enamel as well as the surfaces of teeth samples. (author)

  5. Basic Student Charges at Postsecondary Institutions: Academic Year 1994-95. Tuition and Required Fees and Room and Board Charges at 4-Year, 2-Year, and Public Less-Than-2-Year Institutions. Statistical Analysis Report.

    Science.gov (United States)

    Barbett, Samuel F.; And Others

    This document lists the typical tuition and required fees and room and board charges assessed to college students in 1994-95 based on a national "Institutional Characteristics" survey which is part of the Integrated Postsecondary Education Data System. The data were collected from over 5,000 of the 5,775 4-year, 2-year, and public…

  6. Unraveling the Raman Enhancement Mechanism on 1T'-Phase ReS2 Nanosheets.

    Science.gov (United States)

    Miao, Peng; Qin, Jing-Kai; Shen, Yunfeng; Su, Huimin; Dai, Junfeng; Song, Bo; Du, Yunchen; Sun, Mengtao; Zhang, Wei; Wang, Hsing-Lin; Xu, Cheng-Yan; Xu, Ping

    2018-04-01

    2D transition metal dichalcogenides materials are explored as potential surface-enhanced Raman spectroscopy substrates. Herein, a systematic study of the Raman enhancement mechanism on distorted 1T (1T') rhenium disulfide (ReS 2 ) nanosheets is demonstrated. Combined Raman and photoluminescence studies with the introduction of an Al 2 O 3 dielectric layer unambiguously reveal that Raman enhancement on ReS 2 materials is from a charge transfer process rather than from an energy transfer process, and Raman enhancement is inversely proportional while the photoluminescence quenching effect is proportional to the layer number (thickness) of ReS 2 nanosheets. On monolayer ReS 2 film, a strong resonance-enhanced Raman scattering effect dependent on the laser excitation energy is detected, and a detection limit as low as 10 -9 m can be reached from the studied dye molecules such as rhodamine 6G and methylene blue. Such a high enhancement factor achieved through enhanced charge interaction between target molecule and substrate suggests that with careful consideration of the layer-number-dependent feature and excitation-energy-related resonance effect, ReS 2 is a promising Raman enhancement platform for sensing applications. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  7. A study on the electronic and interfacial structures of monolayer ReS2-metal contacts.

    Science.gov (United States)

    Wang, Jin; Yang, Guofeng; Sun, Rui; Yan, Pengfei; Lu, Yanan; Xue, Junjun; Chen, Guoqing

    2017-10-11

    In this paper, we perform a systematic and rigorous study to evaluate the Ohmic nature of the top-contact formed by the monolayer ReS 2 (mReS 2 ) and metals (gold, silver, platinum, nickel, titanium, and scandium) by means of first-principles density functional theory calculations. We investigate the potential barrier, charge transfer and atomic orbital overlap at the mReS 2 -metal interface in consideration of van der Waals forces to understand how efficiently carriers could be injected from the metal contact to the mReS 2 channel. ReS 2 is physisorbed on Au and Ag, which leads to little perturbation of its electronic structures and forms a larger Schottky contact and a higher tunnel barrier at the interface. ReS 2 is chemisorbed on Ti and Sc, where the bonding strongly perturbs the electronic structures and is found to be purely Ohmic. The bonding of ReS 2 on Pt and Ni lies between these two extreme cases, demonstrating an intermediate behavior. These findings not only provide an insight into the mReS 2 -metal interfaces but may also prove to be instrumental in the future design of ReS 2 -based devices with good performance.

  8. Fourier-Transform Raman Spectroscopy of Polymers Caractérisation de polymères par spectroscopie Raman à transformée de Fourier

    Directory of Open Access Journals (Sweden)

    Siesler H. W.

    2006-11-01

    Full Text Available The recent extension of the Fourier-Transform (FT technique to the Raman effect has launched Raman spectroscopy into a new era of polymer chemical and physical applications. Thus, the increase in signal-to-noise ratio and the improvement in time resolution have largely enhanced the potential of FT-Raman spectroscopy for analytical applications, the characterization of time-dependent phenomena and the on-line combination with other techniques. Primarily the suppression of fluorescence by shifting the excitation line to the near-infrared (NIR region has contributed to the fast acceptance as an industrial routine tool. Furthermore, the application of fiber optics has opened up the areas of process-control and remote sensing. Les applications de la spectroscopie Raman dans le domaine des polymères sont entrées dans une ère nouvelle, grâce aux récents développements de la technique à transformée de Fourier avec excitation dans le proche infrarouge. L'augmentation du rapport signal sur bruit et l'amélioration de la résolution temporelle ont fortement renforcé les potentialités de la technique en ce qui concerne les applications analytiques, la caractérisation de phénomènes qui dépendent du temps et le couplage en ligne avec d'autres techniques. La suppression du phénomène de fluorescence par déplacement de la longueur d'onde de l'excitatrice dans le proche infrarouge a contribué à l'intégration rapide de l'outil en site industriel. L'emploi de fibres optiques a permis l'accroissement des applications dans le domaine du contrôle des procédés et d'analyser à distance.

  9. Observational constraints on f(T) gravity from varying fundamental constants

    Energy Technology Data Exchange (ETDEWEB)

    Nunes, Rafael C.; Bonilla, Alexander [Universidade Federal de Juiz de Fora, Departamento de Fisica, Juiz de Fora, MG (Brazil); Pan, Supriya [Indian Institute of Science Education and Research, Kolkata, Department of Physical Sciences, Mohanpur, West Bengal (India); Saridakis, Emmanuel N. [Pontificia Universidad de Catolica de Valparaiso, Instituto de Fisica, Valparaiso (Chile); National Technical University of Athens, Physics Division, Athens (Greece); Baylor University, CASPER, Physics Department, Waco, TX (United States)

    2017-04-15

    We use observations related to the variation of fundamental constants, in order to impose constraints on the viable and most used f(T) gravity models. In particular, for the fine-structure constant we use direct measurements obtained by different spectrographic methods, while for the effective Newton constant we use a model-dependent reconstruction, using direct observational Hubble parameter data, in order to investigate its temporal evolution. We consider two f(T) models and we quantify their deviation from Λ CDM cosmology through a sole parameter. Our analysis reveals that this parameter can be slightly different from its Λ CDM value, however, the best-fit value is very close to the Λ CDM one. Hence, f(T) gravity is consistent with observations, nevertheless, as every modified gravity, it may exhibit only small deviations from Λ CDM cosmology, a feature that must be taken into account in any f(T) model-building. (orig.)

  10. Der Einsatz von Online-Datenbanken für Objektinnovationen im Systemgeschäft

    OpenAIRE

    Noch, Rainer

    1990-01-01

    Der Einsatz von Online-Datenbanken für Objektinnovationen im Systemgeschäft. - Augsburg : FGM-Verl., 1990. - 62, LVII S. - Zugl.: Augsburg, Univ., Diplomarb. - (Arbeitspapiere zur Schriftenreihe Schwerpunkt Marketing ; 31)

  11. Overexpression of PaFT gene in the wild orchid Phalaenopsis amabilis (L.) Blume

    Science.gov (United States)

    Semiarti, Endang; Mercuriani, Ixora S.; Rizal, Rinaldi; Slamet, Agus; Utami, Bekti S.; Bestari, Ida A.; Aziz-Purwantoro, Moeljopawiro, S.; Jang, Soenghoe; Machida, Y.; Machida, C.

    2015-09-01

    To shorten vegetative stage and induce transition from vegetative to reproductive stage in orchids, we overexpressed Phalaenopsis amabilis Flowering LocusT (PaFT) gene under the control of Ubiquitin promoter into protocorm of Indonesian Wild Orchid Phalaenopsis amabilis (L.) Blume. The dynamic expression of vegetative gene Phalaenopsis Homeobox1 (POH1) and flowering time gene PaFT has been analyzed. Accumulation of mRNA was detected in shoot and leaves of both transgenic and non transgenic plants by using Reverse transcriptase-PCR (RT-PCR) with specific gene primers for POH1 and PaFT in 24 months old plants. To analyze the POH1 and PaFT genes, three pairs of degenerate primers PaFT degF1R1, F2R2 and F3R3 that amplified 531 bp PaFT cDNA were used. We detected 700 bp PaFTcDNA from leaves and shoots of transgenic plants, but not in NT plants. POH1 mRNA was detected in plants. PaFT protein consists of Phospatidyl Ethanolamine-Binding Protein (PEBP) in interval base 73-483 and CETS family protein at base 7-519, which are important motif for transmembrane protein. We inserted Ubipro::PaFT/pGAS101 into P. amabilis protocorm using Agrobacterium. Analysis of transgenic plants showed that PaFTmRNA was accumulated in leaves of 12 months after sowing, although it is not detected in non transgeic plants. Compare to the wild type (NT plants), ectopic expression of PaFT shows alter phenotype as follows: 31% normal, 19% with short-wavy leaves, 5% form rosette leaves and 45% produced multishoots. Analysis of protein profiles of trasgenic plants showed that a putative PaFT protein (MW 19,7 kDa) was produced in 1eaves and shoots.This means that at 12 months, POH1 gene expression gradually decreased/negatively regulated, the expression of PaFT gene was activated, although there is no flower initiation yet. Some environmental factors might play a role to induce inflorescens. This experiment is in progress.

  12. Effect of microwave treatment on structure of binders based on sodium carboxymethyl starch: FT-IR, FT-Raman and XRD investigations

    Science.gov (United States)

    Kaczmarska, Karolina; Grabowska, Beata; Spychaj, Tadeusz; Zdanowicz, Magdalena; Sitarz, Maciej; Bobrowski, Artur; Cukrowicz, Sylwia

    2018-06-01

    The paper deals with the influence of the microwave treatment on sodium carboxymethyl starch (CMS-Na) applied as a binder for moulding sands. The Fourier transformation infrared spectrometry (FT-IR), Raman spectroscopy (FT-Raman) and XRD analysis data of native potato starch and three different carboxymethyl starches (CMS-Na) with various degree of substitution (DS) before and after exposition to microwave radiation have been compared. FT-IR studies showed that polar groups present in CMS-Na structure take part in the formation of new hydrogen bonds network after water evaporation. However, these changes depend on DS value of the modified starch. The FT-Raman study confirmed that due to the impact on the samples by microwave, the changes of intensity in the characteristic bands associated with the crystalline regions in the sample were noticed. The X-ray diffraction data for microwave treated CMS-Na samples have been compared with the diffractograms of initial materials and analysis of XRD patterns confirmed that microwave-treated samples exhibit completely amorphous structure. Analysis of structural changes allows to state that the binding of sand grains in moulding sand with CMS-Na polymeric binder consists in the formation of hydrogen bonds networks (physical cross-linking).

  13. Effect of microwave treatment on structure of binders based on sodium carboxymethyl starch: FT-IR, FT-Raman and XRD investigations.

    Science.gov (United States)

    Kaczmarska, Karolina; Grabowska, Beata; Spychaj, Tadeusz; Zdanowicz, Magdalena; Sitarz, Maciej; Bobrowski, Artur; Cukrowicz, Sylwia

    2018-06-15

    The paper deals with the influence of the microwave treatment on sodium carboxymethyl starch (CMS-Na) applied as a binder for moulding sands. The Fourier transformation infrared spectrometry (FT-IR), Raman spectroscopy (FT-Raman) and XRD analysis data of native potato starch and three different carboxymethyl starches (CMS-Na) with various degree of substitution (DS) before and after exposition to microwave radiation have been compared. FT-IR studies showed that polar groups present in CMS-Na structure take part in the formation of new hydrogen bonds network after water evaporation. However, these changes depend on DS value of the modified starch. The FT-Raman study confirmed that due to the impact on the samples by microwave, the changes of intensity in the characteristic bands associated with the crystalline regions in the sample were noticed. The X-ray diffraction data for microwave treated CMS-Na samples have been compared with the diffractograms of initial materials and analysis of XRD patterns confirmed that microwave-treated samples exhibit completely amorphous structure. Analysis of structural changes allows to state that the binding of sand grains in moulding sand with CMS-Na polymeric binder consists in the formation of hydrogen bonds networks (physical cross-linking). Copyright © 2018 Elsevier B.V. All rights reserved.

  14. Vibrational spectra (FT-IR, FT-Raman), frontier molecular orbital, first hyperpolarizability, NBO analysis and thermodynamics properties of Piroxicam by HF and DFT methods

    Science.gov (United States)

    Suresh, S.; Gunasekaran, S.; Srinivasan, S.

    2015-03-01

    The solid phase FT-IR and FT-Raman spectra of 4-Hydroxy-2-methyl-N-(2-pyridinyl)-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxide (Piroxicam) have been recorded in the region 4000-400 and 4000-100 cm-1 respectively. The molecular geometry, harmonic vibrational frequencies and bonding features of piroxicam in the ground state have been calculated by Hartree-Fock (HF) and density functional theory (DFT) methods using 6-311++G(d,p) basis set. The calculated harmonic vibrational frequencies are scaled and they are compared with experimental obtained by FT-IR and FT-Raman spectra. A detailed interpretation of the vibrational spectra of the title compound has been made on the basis of the calculated potential energy distribution (PED). The electronic properties, such as HOMO and LUMO energies, molecular electrostatic potential (MESP) are also performed. The linear polarizability (α) and the first order hyper polarizability (β) values of the title compound have been computed. The molecular stability arising from hyper conjugative interaction, charge delocalization has been analyzed using natural bond orbital (NBO) analysis.

  15. TG/FT-IR characterization of additives typically employed in EPDM formulations

    Directory of Open Access Journals (Sweden)

    Natália Beck Sanches

    2015-06-01

    Full Text Available AbstractThermogravimetric analysis coupled to Fourier transform infrared spectroscopy (TG/FT-IR is a very popular technique for rubbers characterization. It involves analyses of the base polymer and additives. Ethylene–propylene–diene (EPDM rubbers are frequently investigated by TG/FT-IR; however, the focus has been the degradation temperature range of the polymer. In this study, unvulcanized and vulcanized EPDM rubber and its additives were investigated by TG/FT-IR, without solvent extraction, and in a wide temperature range. Initially, the additives were individually characterized. TG/FT-IR identified the characteristic groups of all the additives analyzed and distinguished them from each other. Afterwards, unvulcanized and vulcanized EPDM rubbers were investigated without prior extraction.TG/FT-IR detected absorptions due to the additives tetramethylthiuram monosulfide and 2-mercaptobenzothiazole. Both of these sulfur-containing additives were present in the EPDM formulation at concentrations of 0.7 phr (0.63 wt %. The TG/FT-IR technique had some limitations, because not all the additives in EPDM rubber were detected. Paraffin oil, stearic acid and 2,2,4-trimethyl-1,2-dihydroquinoline functional groups were not observed in either the unvulcanized or vulcanized EPDM. Nevertheless, in addition to the ability of this method to detect sulfur-containing groups, the lack of a pre-extraction reduces the time and effort required for additive analysis in rubbers.

  16. Developments in FT-ICR MS instrumentation, ionization techniques, and data interpretation methods for petroleomics.

    Science.gov (United States)

    Cho, Yunju; Ahmed, Arif; Islam, Annana; Kim, Sunghwan

    2015-01-01

    Because of the increasing importance of heavy and unconventional crude oil as an energy source, there is a growing need for petroleomics: the pursuit of more complete and detailed knowledge of the chemical compositions of crude oil. Crude oil has an extremely complex nature; hence, techniques with ultra-high resolving capabilities, such as Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), are necessary. FT-ICR MS has been successfully applied to the study of heavy and unconventional crude oils such as bitumen and shale oil. However, the analysis of crude oil with FT-ICR MS is not trivial, and it has pushed analysis to the limits of instrumental and methodological capabilities. For example, high-resolution mass spectra of crude oils may contain over 100,000 peaks that require interpretation. To visualize large data sets more effectively, data processing methods such as Kendrick mass defect analysis and statistical analyses have been developed. The successful application of FT-ICR MS to the study of crude oil has been critically dependent on key developments in FT-ICR MS instrumentation and data processing methods. This review offers an introduction to the basic principles, FT-ICR MS instrumentation development, ionization techniques, and data interpretation methods for petroleomics and is intended for readers having no prior experience in this field of study. © 2014 Wiley Periodicals, Inc.

  17. FAKTOR-FAKTOR PENGHAMBAT PENGERJAAN TUGAS AKHIR SKRIPSI MAHASISWA PENDIDIKAN TEKNIK OTOMOTIF FT UNY

    Directory of Open Access Journals (Sweden)

    Ibnu Siswanto

    2015-06-01

    Full Text Available Tujuan yang ingin dicapai dalam penelitian ini ialah mengetahui dan mendeskripsikan secara faktual, akurat dan sistematis tentang 1 Implementasi pedoman penulisan tugas akhir skripsi mahasiswa FT UNY di Jurusan PT. Otomotif dan 2 Faktor-faktor yang menjadi penghambat dalam pengerjaan tugas akhir skripsi mahasiswa PT. Otomotif FT UNY Penelitian ini menggunakan pendekatan deskriptif. Objek penelitian ialah Koordinator tugas akhir skripsi, dosen pembimbing, dan mahasiswa PT. Otomotif FT UNY. Pengumpulan data dilakukan dengan wawancara dan dokumentasi. Teknik analisis data yang dipergunakan ialah metode analisis deskriptif.  Hasil penelitian menunjukkan bahwa 1 Implementasi pedoman penulisan tugas akhir skripsi di jurusan PT. Otomotif FT UNY dilakukan dengan pembentukan koordinator tugas akhir skripsi, pembagian tahapan-tahapan pengerjaan skripsi yang terdiri dari pengajuan judul, bimbingan, pengambilan data penelitian, dan ujian TAS sampai dengan pengeluaran nilai TAS. Semua dosen PT. Otomotif FT UNY melaksanakan bimbingan tugas akhir skripsi sesuai dengan pedoman penulisan tugas akhir skripsi. Jurusan PT. Otomotif FT UNY juga melakukan bimbingan klasikal bagi mahasiswa yang akan/sedang mengerjakan tugas akhir skripsi, 2 Faktor-faktor yang menjadi penghambat dalam pengerjaan tugas akhir skripsi yaitu kesulitan dalam menemukan permasalahan yang akan diangkat menjadi judul penelitian, mahasiswa fokus mengerjakan proyek akhir (mahasiswa angkatan 2008 ke bawah, fokus laporan KKN PPL, mengulang banyak mata kuliah, tidak rutin bimbingan dengan dosen, kesulitan dalam menulis karya tulis ilmiah.

  18. Room temperature synthesis of ReS2 through aqueous perrhenate sulfidation

    Science.gov (United States)

    Borowiec, Joanna; Gillin, William P.; Willis, Maureen A. C.; Boi, Filippo S.; He, Y.; Wen, J. Q.; Wang, S. L.; Schulz, Leander

    2018-02-01

    In this study, a direct sulfidation reaction of ammonium perrhenate (NH4ReO4) leading to a synthesis of rhenium disulfide (ReS2) is demonstrated. These findings reveal the first example of a simplistic bottom-up approach to the chemical synthesis of crystalline ReS2. The reaction presented here takes place at room temperature, in an ambient and solvent-free environment and without the necessity of a catalyst. The atomic composition and structure of the as-synthesized product were characterized using several analysis techniques including energy dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy, x-ray diffraction, transmission electron microscopy, Raman spectroscopy, thermogravimetric analysis and differential scanning calorimetry. The results indicated the formation of a lower symmetry (1Tʹ) ReS2 with a low degree of layer stacking.

  19. Hierarchical architecture of ReS_2/rGO composites with enhanced electrochemical properties for lithium-ion batteries

    International Nuclear Information System (INIS)

    Qi, Fei; Chen, Yuanfu; Zheng, Binjie; He, Jiarui; Li, Qian; Wang, Xinqiang; Lin, Jie; Zhou, Jinhao; Yu, Bo; Li, Pingjian; Zhang, Wanli

    2017-01-01

    Highlights: • The ReS_2/rGO composites have been synthesized by a facile one-pot method. • The ReS_2/rGO composites exhibit hierarchical architecture. • The ReS_2/rGO composites deliver better electrochemical performances than ReS_2. • The enhanced performance is due to porous and conductive structure of ReS_2/rGO. - Abstract: Rhenium disulfide (ReS_2), a two-dimensional (2D) semiconductor, has attracted more and more attention due to its unique anisotropic electronic, optical, mechanical properties. However, the facile synthesis and electrochemical property of ReS_2 and its composite are still necessary to be researched. In this study, for the first time, the ReS_2/reduced graphene oxide (rGO) composites have been synthesized through a facile and one-pot hydrothermal method. The ReS_2/rGO composites exhibit a hierarchical, interconnected, and porous architecture constructed by nanosheets. As anode for lithium-ion batteries, the as-synthesized ReS_2/rGO composites deliver a large initial capacity of 918 mAh g"−"1 at 0.2 C. In addition, the ReS_2/rGO composites exhibit much better electrochemical cycling stability and rate capability than that of bare ReS_2. The significant enhancement in electrochemical property can be attributed to its unique architecture constructed by nanosheets and porous structure, which can allow for easy electrolyte infiltration, efficient electron transfer, and ionic diffusion. Furthermore, the graphene with high electronic conductivity can provide good conductive passageways. The facile synthesis approach can be extended to prepare other 2D transition metal dichalcogenides semiconductors for energy storage and catalytic application.

  20. Remote Music Tuition

    NARCIS (Netherlands)

    S. Duffy; D. Williams; I. Kegel; T. Stevens; A.J. Jansen (Jack); P.S. Cesar Garcia (Pablo Santiago); P. Healey

    2012-01-01

    htmlabstractIt is common to learn to play an orchestral musical instrument through one-to-one lessons with an experienced tutor. For musicians who choose to study performance at an undergraduate level and beyond, their tutor is an important part of their professional musical development. For many

  1. The Tuition Crisis

    Science.gov (United States)

    Quehl, Gary H.

    1977-01-01

    It is time to drop the "zero sum style" that has public and private institutions divisively arguing over private and public funds, and adopt a posture of mutual support. The president of the Council for the Advancement of Small Colleges (CASC) emphasizes that both independent and state-owned colleges and universities are needed and an educational…

  2. Valorisation par voie hydrométallurgique de Matières Premières Secondaires Valorization of Secondary Raw Materials by hydrometallurgical way

    Directory of Open Access Journals (Sweden)

    Meux Eric

    2013-11-01

    Full Text Available Cet exposé s'intéressera à la récupération par voie hydrométallurgique de métaux contenus dans les Matières Premières Secondaires. Dans un premier temps seront abordées des généralités sur les Métaux Critiques, leur taux de recyclage et les gisements identifiés. Deux exemples de traitement seront ensuite développés : le traitement de catalyseurs d'hydrotraitement et le traitement de poudres métallifères issues de broyats d'accumulateurs par couplage électrolixiviation/électrodéposition. This talk will focus on the hydrometallurgical recovery of metals contained in secondary raw materials. At first, generalities about critical metals, their recycling rate and their identified supply will be addressed. Two examples of hydrometallurgical treatment will be then developed: the treatment of spent hydrotreating catalysts and the treatment of electrodes powders coming from grinding of spent batteries by coupling electroleaching/electrodeposition.

  3. 基于FrFT-MUSIC的空时频算法%Space-time-frequency Algorithm Based on FrFT-MUSIC

    Institute of Scientific and Technical Information of China (English)

    张声杰; 刘梅

    2011-01-01

    针对传统时频分析方法难以对星载分布式合成孔径雷达(SAR)系统中地面目标速度进行准确估计的问题,提出了分数阶傅里叶变换(FrFT)-多重信号分类(MUSIC)空时频方法.利用FrFT获得信号向量并构造空时频分布矩阵;应用该分布矩阵替代传统MUSIC算法中的协方差矩阵,从而求得FrFT- MUSIC空时频谱,通过对谱函数进行搜索估计目标速度.仿真实验表明,该方法的目标速度估计精度高,抗噪声能力强.%The fractional Fourier transform (FrFT)-multipIe signal classification (MUSIC) space-time-frequency algorithm is proposed to solve the problem that it is difficult for the traditional time-frequency analysis method to accurately estimate the ground targets' azimuth speed which is coupled with spaceborne distributed synthetic aperture radar" (SAR). The signal vector is obtained and the space-time-frequency distribution matrix is formed by FrFT. Then, this distribution matrix is used instead of the traditional MUSIC covariance matrix to construct FrFT- MUSIC spectral function. Target speed is estimated by searching. Simulation results show that this algorithm has a high accuracy of parameter estimation and strong resistance to noise.

  4. Revisiting support policies for RES-E adulthood: Towards market compatible schemes

    International Nuclear Information System (INIS)

    Huntington, Samuel C.; Rodilla, Pablo; Herrero, Ignacio; Batlle, Carlos

    2017-01-01

    The past two decades of growth in renewable energy sources of electricity (RES-E) have been largely driven by out-of-market support policies. These schemes were designed to drive deployment on the basis of specific subsidies sustained in time to allow for the larger costs as well as to limit investor risk. While these policies have proven to be effective, the way they have been designed to date has led to costly market distortions that are becoming more difficult to ignore as penetrations reach unpreceded levels. In the context of this growing concern, we provide a critical analysis of the design elements of RES-E support schemes, focusing on how they affect this trade-off between promoting and efficiently integrating RES-E. The emphasis is on the structure of the incentive payment, which in the end turns to be the cornerstone for an efficient integration. We conclude that, while needed, a well-designed and further developed capacity-based support mechanism complemented with ex-post compensations defined for reference benchmark plants, such as the mechanism currently implemented in Spain, is an alternative with good properties if the major goal is truly market integration. The approach is robust to future developments in technology cost, performance and market penetration of RES-E. - Highlights: • Market distortions due to RES support mechanisms are becoming difficult to ignore. • This paper provides a critical analysis of the design elements of RES support schemes. • The emphasis is on the structure of the incentive, key for an efficient integration. • We argue in favor of a further developed capacity-based support mechanism. • The incentive should be combined with the design of a set of reference plants.

  5. Energy and climate hand-in-hand: Financing RES-E support with carbon revenues

    International Nuclear Information System (INIS)

    Verde, Stefano F.; Pazienza, Maria Grazia

    2016-01-01

    In Italy, the cost of support for renewable electricity (RES-E) is largely recovered through the “A3 surcharge”, which weighs heavily on electricity bills. Using household survey data, we show the A3 surcharge is markedly regressive. Carbon taxation in the non-ETS sector is envisaged as a means to reduce CO_2 emissions cost-effectively and generate revenue to lower the A3 surcharge. A non-ETS carbon tax would be less regressive than the A3 surcharge and its cost would be more evenly distributed across households. We calculate the revenue of a €20/tCO_2 non-ETS carbon tax would have allowed a cut in the A3 surcharge of about 68% in 2011, and 39% in 2012. The impact of the carbon tax plus the reduced A3 surcharge would have been less regressive, but the cost higher for most households. The restrictions imposed in the simulations mean the results are only appropriate to render first-round effects of the reform. Policy relevance: In the vast majority of the EU Member States, the cost of RES-E support is largely paid by electricity consumers, most often through specific surcharges. Rising electricity prices are a common concern given the implications for competitiveness and equity. The Member States facing this issue could conveniently address it through environmental tax reforms consistent with the Climate and Energy Package. Replacing RES-E surcharges with carbon taxes in the non-ETS sector would permit cost-effective reduction of CO_2 emissions while allocating the cost of RES-E support more equitably. The difference in regressivity would stem from the different consumption patterns of home fuels (including electricity) and motor fuels across income distribution. A cross-country comparison of energy household budget shares proves the structural nature of this difference between home fuels and motor fuels. Moreover, the notion that electricity consumers should pay for RES-E support is questioned on the grounds that electricity is a basic necessity good and RES

  6. Gestão de resíduos sólidos em restaurante escola

    Directory of Open Access Journals (Sweden)

    Bianca Peruchin

    2013-01-01

    Full Text Available Um dos maiores problemas ambientais da atualidade é a excessiva geração de resíduos e a sua destinação final ambientalmente adequada. As Instituições de Ensino Superior (IES são importantes fontes geradoras devido à diversidade de atividades de ensino, pesquisa e extensão realizadas no seu âmbito. Os Restaurantes Escola (RE atendem à comunidade acadêmica dos campi universitários, e caracterizam-se por produzir resíduos similares aos domésticos, mas em maior quantidade. Este estudo foi realizado com o objetivo de investigar a composição gravimétrica dos resíduos produzidos em um RE de uma IES localizada no sul do país, bem como conhecer a situação atual do gerenciamento dos resíduos. Os dados foram obtidos através da caracterização dos resíduos do RE durante cinco dias, de entrevista com os gestores responsáveis pelo estabelecimento e da observação direta no local. Averiguou-se a inexistência de um Plano de Gerenciamento dos Resíduos Sólidos no RE, bem como a ausência de práticas efetivas relacionadas ao manejo destes. A segregação dos resíduos é prejudicada devido à falta de lixeiras específicas e a sobrecarga dos funcionários quanto às atividades desempenhadas. Ao longo do período experimental foram caracterizados 547,068 Kg de resíduos, dos quais mais de 80% corresponderam à matéria orgânica. Conclui-se que o montante de resíduo orgânico gerado pode ser destinado à compostagem. Recomenda-se a implantação de uma infraestrutura adequada para o manejo dos resíduos, que pode ser feita através da elaboração e aplicação de um plano de gestão integrada dos resíduos sólidos no RE.Abstract Nowadays, the amount of waste generated and its proper final destination is one of the greatest environmental issues. Higher education institutions are an important source of waste due to the diversity of teaching, researching and extension activities performed in their facilities. The university

  7. Electronic and optoelectronic device applications based on ReS2

    Science.gov (United States)

    Liu, Erfu; Long, Mingsheng; Wang, Yaojia; Pan, Yiming; Ho, Chinghwa; Wang, Baigeng; Miao, Feng

    Rhenium disulfide (ReS2) is a unique semiconducting TMD with distorted 1T structure and weak interlayer coupling. We have previously investigated its in-plane anisotropic property and electronic applications on FET and digital inverters. In this talk, we will present high responsivity phototransistors based on few-layer ReS2. Depending on the back gate voltage, source drain bias and incident optical light intensity, the maximum attainable photoresponsivity can reach as high as 88,600 A W-1, which is one of the highest value among individual two-dimensional materials with similar device structures. Such high photoresponsivity is attributed to the increased light absorption as well as the gain enhancement due to the existence of trap states in the few-layer ReS2 flakes. The existence of trap states is proved by temperature dependent transport measurements. It further enables the detection of weak signals. Our studies underscore ReS2 as a promising material for future electronic and sensitive optoelectronic applications.

  8. Modèles de gestion des ressources forestières du massif ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Expérimentation Participative et Adaptative de Modèles de Gestion des Ressources Forestières dans la Chaine Montagneuse de l'Atlas (Algérie, Maroc, Tunisie) : rapport final (17 mars 2009 au 18 septembre 2012). Download PDF. Reports. Unité de transformation de cire d'abeille (Commune de M'Sara). Download PDF ...

  9. Res, aliquid and nihil in Suárez and modern philosophy

    Directory of Open Access Journals (Sweden)

    Leopoldo Prieto López

    2013-07-01

    Full Text Available the main relevant philosophical aspect in Suárez’s interpretation of the transcendentals is his doctrine of the notions res and aliquid. therefore, after analyzing the nature and the number of the transcendentals, as well as the relationship between them and the first principles, the article goes into a detailed historical analysis of the notions res and aliquid. With precedents in Avicenna and Duns Scotus, the ens is understood according to Suarez, negatively, as it is not nothing and, in such sense, it is something (aliquid and, positively, as it has got a quidditas and, therefore, it is res. the question of nothing (nihil is thus introduced into modern metaphysics. What’s more, the said interpretation is one of the fundamental conditions of the transformation of metaphysics in modern ontology. thus, in the post- Cartesian context of Schulmetaphysik, and its aliquitas (as non-nihil and its quiditative character (as res being presumed, the ens will be understood as an intelligible. through that, a Copernican revolution commenced that anticipated Kant himself.

  10. Res Publica murrab läbi / Urmo Kübar

    Index Scriptorium Estoniae

    Kübar, Urmo, 1978-

    2004-01-01

    Ilmunud ka: Võta Võim : na russkom jazõke, 28. apr. 2004, lk. 1. 18. aprillil 2004 Tallinnas toimunud Res Publica valimiskonverentsist, kus kinnitati programm ja kandidaadid Euroopa Parlamendi valimisteks. Esinesid Urmas Reinsalu ja Juhan Parts. Vt. samas: Kust tuli 'Murrame läbi'?

  11. Res Publica alustas Tallinnas koostööd Keskerakonnaga / Siim Männik

    Index Scriptorium Estoniae

    Männik, Siim

    2005-01-01

    Ilmunud ka: Vabariik (venek.) 18. apr. lk. 2. Koalitsioonivahetusest Tallinnas. Linnavolikogu Res Publica fraktsiooni esimehe Andres Korgi, linnapea Tõnis Paltsi nõuniku Jaano Martin Otsa kommentaare. Tallinna linnapea hinnangul on sügisel koalitsiooni asudes seatud eesmärgid praeguseks peaaegu saavutatud

  12. Médecins Sans Frontières moves to protect refugee healthcare

    African Journals Online (AJOL)

    As Médecins Sans Frontières (MSF) spurned all European Union (EU) fund ing for its projects worldwide after a series of cynical EUcountry moves to choke inward refugee flow, South African. (SA) activists in Johannesburg this June protes ted the proposed stiffening of local refugee laws. The People's Coalition Against ...

  13. Dynamique de fréquentation des grands mammifères dans une ...

    African Journals Online (AJOL)

    SARAH

    31 juil. 2016 ... 2016 Dynamique de fréquentation des grands mammifères dans une clairière ... 2Ecole Régionale Post-Universitaire d'Aménagement et de gestion Intégrés des Forêts et ..... épidémiologique et contrôle des stomoxes à la.

  14. Distribution of costs induced by the integration of RES-E power

    International Nuclear Information System (INIS)

    Barth, Ruediger; Weber, Christoph; Swider, Derk J.

    2008-01-01

    This article focuses on the distribution of costs induced by the integration of electricity generation from renewable energy sources (RES-E). The treatment to distribute these costs on different market actors is crucial for its development. For this purpose, individual actors of electricity markets and several cost categories are identified. According to the defined cost structure, possible treatments to distribute the individual cost categories on different relevant actors are described. Finally, an evaluation of the cost distribution treatments based on an economic analysis is given. Economic efficiency recommends that clearly attributable (shallow) grid connection as well as (deep) grid costs are charged to the corresponding RES-E producer and that the RES-E producers are also charged the regulating power costs. However, deep grid integration costs should be updated to reflect evolving scarcities. Also regulating power costs should reflect actual scarcity and thus be symmetric and based on real-time prices, taking into account the overall system imbalance. Moreover, the time span between the closure of the spot market and actual delivery should be chosen as short as possible to enable accurate RES-E production forecasts

  15. Res-Parity: Parity Violation in Inelastic scattering at Low Q2

    International Nuclear Information System (INIS)

    Paul Reimer; Peter Bosted; John Arrington; Hamlet Mkrtchyan; Xiaochao Zheng

    2006-01-01

    Parity violating electron scattering has become a well established tool which has been used, for example, to probe the Standard Model and the strange-quark contribution to the nucleon. While much of this work has focused on elastic scattering, the RES-Parity experiment, which has been proposed to take place at Jefferson Laboratory, would focus on inelastic scattering in the low-Q 2 , low-W domain. RES-Parity would search for evidence of quark-hadron duality and resonance structure with parity violation in the resonance region. In terms of parity violation, this region is essentially unexplored, but the interpretation of other high-precision electron scattering experiments will rely on a reasonable understanding of scattering at lower energy and low-W through the effects of radiative corrections. RES-Parity would also study nuclear effects with the weak current. Because of the intrinsic broad band energy spectrum of neutrino beams, neutrino experiments are necessarily dependent on an untested, implicit assumption that these effects are identical to electromagnetic nuclear effects. RES-Parity is a relatively straight forward experiment. With a large expected asymmetry (∼ 0.5 x 10 -4 ) these studies may be completed with in a relatively brief period

  16. Taani ristisõjad Läänemere ääres / Linda Kaljundi

    Index Scriptorium Estoniae

    Kaljundi, Linda

    2007-01-01

    Raamatututvustus: Taani ristisõjad - sõda ja misjon Läänemere ääres / John H. Lind, Carsten Selch Jensen, Kurt Villads Jensen, Ane L. Bysted ; tõlkijad Ivar Rüütli ja Kalle Kroon ; teaduslik toimetaja ja järelsõna: Linda Kaljundi. Tallinn : Argo, 2007

  17. Proposta de um desenho da cadeia reversa para resíduos eletroeletrônicos

    Directory of Open Access Journals (Sweden)

    Reinaldo Alves de Sá Ferreira Júnior

    2016-12-01

    Full Text Available Com o crescimento da demanda dos equipamentos eletroeletrônicos e de sua rápida obsolescência, gera-se grande volume de resíduos, os quais possuem metais pesados altamente tóxicos, como o mercúrio, cobre, chumbo, arsênio, entre outros. A implantação da Logística Reversa (LR tem sido uma forma de gestão de grande sucesso, tanto no contexto internacional como nacional, e aliada a Politica Nacional de Resíduos Sólidos (PNRS tornou-se uma forma mais eficaz para o gerenciamento desses resíduos. Este artigo teve como objetivo, a partir da revisão na literatura referente à LR, PNRS e REEE apresentar atores, atribuições e processos associados, propondo, desta forma, uma estrutura geral para a cadeia de suprimentos reversa de pós-consumo associada aos REEE. A principal contribuição do artigo é proposição de um desenho da cadeia reversa para resíduos Eletroeletrônicos.

  18. Res Publica nõuab rea võimulubaduste täitmist / Rasmus Kagge

    Index Scriptorium Estoniae

    Kagge, Rasmus, 1977-

    2005-01-01

    Res Publica lubas koalitsioonipartneritele mitte minna koalitsioonileppe kallale, kui nad toetavad toppama jäänud lubaduste täitmist - haridusreformi, presidendi otsevalimiste seadustamist, riigikontrollile ka omavalitsuste kontrollimiseks õiguse andmist ja lapsevanema tulumaksuvaba miinimumi kahekordistamist alates pere teisest lapsest. Lisa: Võimuliitlaste soovid

  19. Low FT3: a possible marker of frailty in the elderly

    Directory of Open Access Journals (Sweden)

    Bertoli A

    2017-02-01

    Full Text Available Aldo Bertoli,1 Alessia Valentini,1 Maria Assunta Cianfarani,1 Elena Gasbarra,2 Umberto Tarantino,2 Massimo Federici1 1Department of Systems Medicine, University of Rome “Tor Vergata”, Rome, Italy; 2Department of Orthopaedics and Traumatology, University of Rome “Tor Vergata”, Rome, Italy Introduction: Frailty is associated with a functional decline of multiple physiological systems, of which they may be a cause or consequence. The objective of the study was to evaluate the prevalence of thyroid hormone modifications in elderly frail subjects and its relationship with frailty.Study population and methods: An observational study was carried out at the University Hospital “Tor Vergata” in Rome among ambulatory and hospitalized patients. The study population consisted of 112 elderly subjects: 62 were hospitalized following hip fracture and 50 control subjects were outpatients. Participating patients received a multidimensional geriatric evaluation. The Survey of Health, Ageing and Retirement in Europe Frailty Instrument (SHARE-FI was used to assess the degree of frailty. Thyroid stimulating hormone (TSH, free triiodothyronine (FT3, and free thyroxine (FT4 were measured to evaluate thyroid status.Results: FT3, but not FT4, was significantly correlated with Frailty score, both in patients with hip fracture and in patients from the control group. In the entire study population, FT3 under normal limits is effective in discriminating frail/prefrail subjects from nonfrail subjects.Discussion: The reduction in serum concentrations of FT3 is a clear manifestation of stress associated with fractures. Numerous preexisting factors, such as the fracture patients’ nutritional status, sarcopenia, disability and comorbidities, which characterize the condition of frailty and influence its pathogenesis, are strongly correlated with FT3 values, suggesting the existence of latent nonthyroidal illness syndrome (NTIS.Conclusion: We conclude that measuring

  20. Spectroscopic investigation (FT-IR, FT-Raman), HOMO-LUMO, NBO, and molecular docking analysis of N-ethyl-N-nitrosourea, a potential anticancer agent

    Science.gov (United States)

    Singh, Priyanka; Islam, S. S.; Ahmad, Hilal; Prabaharan, A.

    2018-02-01

    Nitrosourea plays an important role in the treatment of cancer. N-ethyl-N-nitrosourea, also known as ENU, (chemical formula C3H7N3O2), is a highly potent mutagen. The chemical is an alkylating agent and acts by transferring the ethyl group of ENU to nucleobases (usually thymine) in nucleic acids. The molecular structure of N-ethyl-N-nitrosourea has been elucidated using experimental (FT-IR and FT-Raman) and theoretical (DFT) techniques. APT charges, Mulliken atomic charges, Natural bond orbital, Electrostatic potential, HOMO-LUMO and AIM analysis were performed to identify the reactive sites and charge transfer interactions. Furthermore, to evaluate the anticancer activity of ENU molecular docking studies were carried out against 2JIU protein.

  1. Application of Fourier transform infrared (FT-IR) spectroscopy in determination of microalgal compositions.

    Science.gov (United States)

    Meng, Yingying; Yao, Changhong; Xue, Song; Yang, Haibo

    2014-01-01

    Fourier transform infrared spectroscopy (FT-IR) was applied in algal strain screening and monitoring cell composition dynamics in a marine microalga Isochrysis zhangjiangensis during algal cultivation. The content of lipid, carbohydrate and protein of samples determined by traditional methods had validated the accuracy of FT-IR method. For algal screening, the band absorption ratios of lipid/amide I and carbo/amide I from FT-IR measurements allowed for the selection of Isochrysis sp. and Tetraselmis subcordiformis as the most potential lipid and carbohydrate producers, respectively. The cell composition dynamics of I. zhangjiangensis measured by FT-IR revealed the diversion of carbon allocation from protein to carbohydrate and neutral lipid when nitrogen-replete cells were subjected to nitrogen limitation. The carbo/amide I band absorption ratio had also been demonstrated to depict physiological status under nutrient stress in T. subcordiformis. FT-IR serves as a tool for the simultaneous measurement of lipid, carbohydrate, and protein content in cell. Copyright © 2013 Elsevier Ltd. All rights reserved.

  2. Beer fermentation: monitoring of process parameters by FT-NIR and multivariate data analysis.

    Science.gov (United States)

    Grassi, Silvia; Amigo, José Manuel; Lyndgaard, Christian Bøge; Foschino, Roberto; Casiraghi, Ernestina

    2014-07-15

    This work investigates the capability of Fourier-Transform near infrared (FT-NIR) spectroscopy to monitor and assess process parameters in beer fermentation at different operative conditions. For this purpose, the fermentation of wort with two different yeast strains and at different temperatures was monitored for nine days by FT-NIR. To correlate the collected spectra with °Brix, pH and biomass, different multivariate data methodologies were applied. Principal component analysis (PCA), partial least squares (PLS) and locally weighted regression (LWR) were used to assess the relationship between FT-NIR spectra and the abovementioned process parameters that define the beer fermentation. The accuracy and robustness of the obtained results clearly show the suitability of FT-NIR spectroscopy, combined with multivariate data analysis, to be used as a quality control tool in the beer fermentation process. FT-NIR spectroscopy, when combined with LWR, demonstrates to be a perfectly suitable quantitative method to be implemented in the production of beer. Copyright © 2014 Elsevier Ltd. All rights reserved.

  3. [Study of alkaline lignin from Arundo donax linn based on FT Raman spectroscopy].

    Science.gov (United States)

    You, Ting-ting; Ma, Jian-feng; Guo, Si-qin; Xu, Feng

    2014-08-01

    Arundo donax linn, as a perennial energy crop, has promising application prospect. In the present study, Fourier transform Raman (FT Raman) spectroscopy was applied to determine the structural information of materials, milled wood lignin (MWL), and alkaline lignins (AL, under different treated time) from A. donax stem nondestructively. The results indicated that, extractable compounds in A. donax had negative contribution to the Raman spectra without rising new Raman peaks. FT Raman spectrum of MWL indicated that MWL from A. donax was HGS type lignins. Compared with the spectra of MWL from wood materials, the peak at 1173 cm(-1) was much higher in intensity for the MWL from A. donax stem, which may be assigned to hydroxycinnamic acid by analyzing the standard. With respect to FT Raman spectra of ALs, the relatively highest intensity of 1173 cm(-1) was found in alkaline lignin (AL2), which was treated for 40 min by alkaline. Moreover, the peak of coniferaldehyde/sinapaldehyde (1630 cm(-1)) was lowest in intensity while the band attributed to coniferyl alcohol/sinapyl alcohol (1660 cm(-1)) was almost disappeared in AL2. It could be inferred that AL2 demonstrated a highest content of phenolic acid, which may improve its potential application, such as for antioxidant activity. Furthermore, the results obtained by FT Raman spectra were verified by two dimensional heteronuclear singlequantum coherence nuclear magnetic resonance analyses. Above all, FT Raman spectroscopy provided alternative safe, rapid, accurate, and nondestructive technology for lignin structure determination.

  4. FT-IR, FT-Raman, UV spectra and DFT calculations on monomeric and dimeric structure of 2-amino-5-bromobenzoic acid.

    Science.gov (United States)

    Karabacak, Mehmet; Cinar, Mehmet

    2012-02-01

    In this work, the molecular conformation, vibrational and electronic transition analysis of 2-amino-5-bromobenzoic acid (2A5BrBA) were presented for the ground state using experimental techniques (FT-IR, FT-Raman and UV) and density functional theory (DFT) employing B3LYP exchange correlation with the 6-311++G(d,p) basis set. FT-IR and FT-Raman spectra were recorded in the regions of 400-4000 cm(-1) and 50-4000 cm(-1), respectively. There are four conformers, C1, C2, C3 and C4 for this molecule. The geometrical parameters, energies and wavenumbers have been obtained for all four conformers. The computational results diagnose the most stable conformer of 2A5BrBA as the C1 form. The complete assignments of fundamental vibrations were performed on the basis of the total energy distribution (TED) of the vibrational modes, calculated with scaled quantum mechanics (SQM) method. Raman activities calculated by DFT method have been converted to the corresponding Raman intensities using Raman scattering theory. The UV spectra of investigated compound were recorded in the region of 200-400 nm for ethanol and water solutions. The electronic properties were evaluated with help of time-dependent DFT (TD-DFT) theoretically and results were compared with experimental observations. The thermodynamic properties of the studied compound at different temperatures were calculated, revealing the correlations between standard heat capacity, standard entropy, standard enthalpy changes and temperatures. The observed and the calculated geometric parameters, vibrational wavenumbers and electronic transitions were compared with observed data and found to be in good agreement. Copyright © 2011 Elsevier B.V. All rights reserved.

  5. Spontaneous atopic dermatitis-like symptoms in a/a ma ft/ma ft/J flaky tail mice appear early after birth.

    Directory of Open Access Journals (Sweden)

    Magdalini Kypriotou

    Full Text Available Loss-of-function mutations in human profilaggrin gene have been identified as the cause of ichthyosis vulgaris (IV, and as a major predisposition factor for atopic dermatitis (AD. Similarly, flaky tail (a/a ma ft/ma ft/J mice were described as a model for IV, and shown to be predisposed to eczema. The aim of this study was to correlate the flaky tail mouse phenotype with human IV and AD, in order to dissect early molecular events leading to atopic dermatitis in mice and men, suffering from filaggrin deficiency. Thus, 5-days old flaky tail pups were analyzed histologically, expression of cytokines was measured in skin and signaling pathways were investigated by protein analysis. Human biopsies of IV and AD patients were analyzed histologically and by real time PCR assays. Our data show acanthosis and hyperproliferation in flaky tail epidermis, associated with increased IL1β and thymic stromal lymphopoietin (TSLP expression, and Th2-polarization. Consequently, NFκB and Stat pathways were activated, and IL6 mRNA levels were increased. Further, quantitative analysis of late epidermal differentiation markers revealed increased Small proline-rich protein 2A (Sprr2a synthesis. Th2-polarization and Sprr2a increase may result from high TSLP expression, as shown after analysis of 5-days old K14-TSLP tg mouse skin biopsies. Our findings in the flaky tail mouse correlate with data obtained from patient biopsies of AD, but not IV. We propose that proinflammatory cytokines are responsible for acanthosis in flaky tail epidermis, and together with the Th2-derived cytokines lead to morphological changes. Accordingly, the a/a ma ft/ma ft/J mouse model can be used as an appropriate model to study early AD onset associated with profilaggrin deficiency.

  6. Res Publica soovib riigikogulaste kuluhüvitiste korra muutmist / Siim-Valmar Kiisler ; interv. Kalle Muuli

    Index Scriptorium Estoniae

    Kiisler, Siim, 1965-

    2003-01-01

    Res Publica saadikud teevad Riigikogu juhatusele ettepaneku muuta kuluhüvitiste korda, teatas intervjuus Res Publica saadikurühma esimees Siim-Valmar Kiisler. Kommenteerivad: Jaanus Männik, Toomas Varek. Vt. samas: Riigikogu liikmete vastuseid küsimustele tööga seotud kulude kohta: Robert Lepikson, Reet Roos, Janno Reiljan

  7. Experience of the Canary Islands in the development of insular 100% RES systems and micro-grids

    Energy Technology Data Exchange (ETDEWEB)

    Piernavieja, Gonzalo; Suarez, Salvador; Henriquez, Daniel [Instituto Tecnologico de Canarias (Canary Islands Institute of Technology - ITC), Las Palmas, Gran Canaria (Spain). RandD Div.

    2010-07-01

    Given the mentioned circumstances, conventional energy planning in the Canary Islands is a very complex task. The Regional Energy Plan PECAN (2007-2015) tries to correct the existing critical situation setting, among others, the ambitious goal of >25% electricity from RES (mostly wind) for 2015. In parallel to this conventional energy planning, outstanding initiatives in the distributed generation field are underway. ITC vision is that the Canarian Archipelago, given its particular characteristics (insular systems of different sizes, abundant RES potential -different sources-, important natural and biodiversity heritage, etc.), are a laboratory for testing and demonstrating new energy technologies in real conditions, as well as their commercial implementation. These new technologies include energy storage (particularly for excess RES that cannot be absorbed by the grids), development of 100% energy self- sufficiency models (with exclusive use of RES) and micro-/minigrids with high RES penetration and RES forecasting, including advanced ICTs and sustainable mobility concepts (e.g. V2G technologies). Given the high conventional generation costs and the relatively low RES costs (wind electricity production cost is less than 0.03 Euro/kWh), the Canary Islands could in the short term achieve grid parity, and in this sense pioneer the change to a RES based energy system. Models tested on the islands could be exported or extrapolated to our islands, regions of developing countries and even other regions in continental Europe. (orig.)

  8. Analüütikud ennustavad Res Publicale mõõnast pääsu / Rasmus Kagge

    Index Scriptorium Estoniae

    Kagge, Rasmus, 1977-

    2005-01-01

    Poliitikavaatlejate hinnangul ületab Res Publica mõõna ja saab järgmistel parlamendivalimistel kuni 12 kohta, kui nad loobuvad "uue poliitika" stiilis loosungitest ja kõrkusest. Lisa: Mõõna põhjusi. Vt. samas: Taavi Veskimägi lubas lõpetada Res Publica peataoleku

  9. Copépodes, Cladocères et Rotifères du lac Sidi M'hamed Benali (Algérie Nord-Occidentale

    Directory of Open Access Journals (Sweden)

    Mohamed Ali Bouzidi

    2010-03-01

    Full Text Available En 2008, 33 espèces de Cladocères, Copépodes et Rotifères ont été observées dans le lac Sidi M'hamed Benali (contre 12 seulement en 1992.Les Copépodes dominent en mars, avril, juillet, août et septembre, avec respectivement des dominances (Do égales à : 56,6 %, 55,0 %, 55,0 %, 46,4 % et 90,0 %. Les Cladocères dominent en février (Do = 37,2 %, mai (Do = 47,4 % et décembre (Do = 48,6 %. Les Rotifères sont extrêmement abondants et présentent une large dominance en janvier (Do = 95,3 %. La population zooplanctonique est très faible en juillet et en août. Au cours de l'année le peuplement varie en fonction de la température, des conditions hydrologiques, de l'abondance de la nourriture et de la prédation par les poissons.In 2008, 33 species of Cladocers, Copepods and Rotifers have been observed in Sidi M’hamed Benali Lake (against only 12 species in 1992. The Copepods dominate in March, April, July, August and September, respectively with dominance (Do equal to 56.6 %, 55.0 %, 55.0 %, 46.4 % and 90.0 %. Cladocers dominated in February (Do = 37.2 %, May (Do = 47.4 % and December (Do = 48.6 %. The rotifers are extremely abundant and have a wide dominance in January (Do = 95.3%. The zooplankton population is very low in July and August. During the year, the population varies with temperature, water conditions, abundance of food and predation by fishes.

  10. Some aspects of reconstruction using a scalar field in f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Chakrabarti, Soumya [Indian Institute of Technology, Centre for Theoretical Studies, Kharagpur (India); Said, Jackson Levi [University of Malta, Institute of Space Sciences and Astronomy, Msida, MSD (Malta); Farrugia, Gabriel [University of Malta, Department of Physics, Msida, MSD (Malta)

    2017-12-15

    General relativity characterizes gravity as a geometric property exhibited on spacetime by massive objects, while teleparallel gravity achieves the same results at the level of equations, by taking a torsional perspective of gravity. Similar to the f(R) theory teleparallel gravity can also be generalized to f(T), with the resulting field equations being inherently distinct from f(R) gravity in that they are second order, while in the former case they turn out to be fourth order. In the present case, a minimally coupled scalar field is investigated in the f(T) gravity context for several forms of the scalar field potential. A number of new f(T) solutions are found for these potentials. Their respective state parameters are also being examined. (orig.)

  11. Determination of Free Fatty Acid by FT-NIR Spectroscopy in Esterification Reaction for Biodiesel Production

    Directory of Open Access Journals (Sweden)

    Djéssica Tatiana Raspe

    2013-01-01

    Full Text Available This work reports the use of FT-NIR spectroscopy coupled with multivariate calibration to determine the percentage of free fatty acids (FFA in samples obtained by the esterification of FFA in vegetable oils. The analytical method used as calibration matrix samples of the reaction medium of esterification of oleic acid in soybean oil in proportions of 0.3 to 40 wt% (by weight of oleic acid obtained under different experimental conditions and utilized the partial least squares (PLS regression. The efficiency of the method was tested to predict the content of FFA in reactions of esterification of oleic acid in soybean oil catalysed by KSF clay and Amberlyst 15 commercial resin, both in a batch mode. Good Correlations were observed between the FT-NIR/PLS method and the reference method (AOCS. The results confirm that FT-NIR spectroscopy, in combination with multivariate calibration, is a promising technique for monitoring esterification reaction for biodiesel production.

  12. A perturbative approach to neutron stars in f(T, T)-gravity

    Energy Technology Data Exchange (ETDEWEB)

    Pace, Mark; Said, Jackson Levi [University of Malta, Department of Physics, Msida (Malta); University of Malta, Institute of Space Sciences and Astronomy, Msida (Malta)

    2017-05-15

    We derive a Tolman-Oppenheimer-Volkoff equation in neutron star systems within the modified f(T, T)-gravity class of models using a perturbative approach. In our approach f(T, T)-gravity is considered to be a static spherically symmetric space-time. In this instance the metric is built from a more fundamental vierbein which can be used to relate inertial and global coordinates. A linear function f = T(r) + T(r) + χh(T, T) + O(χ{sup 2}) is taken as the Lagrangian density for the gravitational action. Finally we impose the polytropic equation of state of neutron star upon the derived equations in order to derive the mass profile and mass-central density relations of the neutron star in f(T, T)-gravity. (orig.)

  13. Analytic rotating black-hole solutions in N-dimensional f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    Nashed, G.G.L. [The British University in Egypt, Centre for Theoretical Physics, P.O. Box 43, Cairo (Egypt); Ain Shams University, Faculty of Science, Mathematics Department, Cairo (Egypt); Egyptian Relativity Group (ERG), Cairo (Egypt); El Hanafy, W. [The British University in Egypt, Centre for Theoretical Physics, P.O. Box 43, Cairo (Egypt); Egyptian Relativity Group (ERG), Cairo (Egypt)

    2017-02-15

    A non-diagonal vielbein ansatz is applied to the N-dimension field equations of f(T) gravity. An analytical vacuum solution is derived for the quadratic polynomial f(T)=T+εT{sup 2} and an inverse relation between the coupling constant ε and the cosmological constant Λ. Since the induced metric has off-diagonal components, it cannot be removed by a mere coordinate transformation, the solution has a rotating parameter. The curvature and torsion scalars invariants are calculated to study the singularities and horizons of the solution. In contrast to general relativity, the Cauchy horizon differs from the horizon which shows the effect of the higher order torsion. The general expression of the energy-momentum vector of f(T) gravity is used to calculate the energy of the system. Finally, we have shown that this kind of solution satisfies the first law of thermodynamics in the framework of f(T) gravitational theories. (orig.)

  14. FT-IR spectrum of grape seed oil and quantum models of fatty acids triglycerides

    Science.gov (United States)

    Berezin, K. V.; Antonova, E. M.; Shagautdinova, I. T.; Chernavina, M. L.; Dvoretskiy, K. N.; Grechukhina, O. N.; Vasilyeva, L. M.; Rybakov, A. V.; Likhter, A. M.

    2018-04-01

    FT-IR spectra of grape seed oil and glycerol were registered in the 650-4000 cm-1 range. Molecular models of glycerol and some fatty acids that compose the oil under study - linoleic, oleic, palmitic and stearic acids - as well as their triglycerides were developed within B3LYP/6-31G(d) density functional model. A vibrating FT-IR spectrum of grape seed oil was modeled on the basis of calculated values of vibrating wave numbers and IR intensities of the fatty acids triglycerides and with regard to their percentage. Triglyceride spectral bands that were formed by glycerol linkage vibrations were revealed. It was identified that triglycerol linkage has a small impact on the structure of fatty acids and, consequently, on vibrating wave numbers. The conducted molecular modeling became a basis for theoretical interpretation on 10 experimentally observed absorption bands in FT-IR spectrum of grape seed oil.

  15. AKTIP/Ft1, a New Shelterin-Interacting Factor Required for Telomere Maintenance.

    KAUST Repository

    Burla, Romina; Carcuro, Mariateresa; Raffa, Grazia D; Galati, Alessandra; Raimondo, Domenico; Rizzo, Angela; La Torre, Mattia; Micheli, Emanuela; Ciapponi, Laura; Cenci, Giovanni; Cundari, Enrico; Musio, Antonio; Biroccio, Annamaria; Cacchione, Stefano; Gatti, Maurizio; Saggio, Isabella

    2015-01-01

    Telomeres are nucleoprotein complexes that protect the ends of linear chromosomes from incomplete replication, degradation and detection as DNA breaks. Mammalian telomeres are protected by shelterin, a multiprotein complex that binds the TTAGGG telomeric repeats and recruits a series of additional factors that are essential for telomere function. Although many shelterin-associated proteins have been so far identified, the inventory of shelterin-interacting factors required for telomere maintenance is still largely incomplete. Here, we characterize AKTIP/Ft1 (human AKTIP and mouse Ft1 are orthologous), a novel mammalian shelterin-bound factor identified on the basis of its homology with the Drosophila telomere protein Pendolino. AKTIP/Ft1 shares homology with the E2 variant ubiquitin-conjugating (UEV) enzymes and has been previously implicated in the control of apoptosis and in vesicle trafficking. RNAi-mediated depletion of AKTIP results in formation of telomere dysfunction foci (TIFs). Consistent with these results, AKTIP interacts with telomeric DNA and binds the shelterin components TRF1 and TRF2 both in vivo and in vitro. Analysis of AKTIP- depleted human primary fibroblasts showed that they are defective in PCNA recruiting and arrest in the S phase due to the activation of the intra S checkpoint. Accordingly, AKTIP physically interacts with PCNA and the RPA70 DNA replication factor. Ft1-depleted p53-/- MEFs did not arrest in the S phase but displayed significant increases in multiple telomeric signals (MTS) and sister telomere associations (STAs), two hallmarks of defective telomere replication. In addition, we found an epistatic relation for MST formation between Ft1 and TRF1, which has been previously shown to be required for replication fork progression through telomeric DNA. Ch-IP experiments further suggested that in AKTIP-depleted cells undergoing the S phase, TRF1 is less tightly bound to telomeric DNA than in controls. Thus, our results collectively

  16. AKTIP/Ft1, a New Shelterin-Interacting Factor Required for Telomere Maintenance.

    KAUST Repository

    Burla, Romina

    2015-06-25

    Telomeres are nucleoprotein complexes that protect the ends of linear chromosomes from incomplete replication, degradation and detection as DNA breaks. Mammalian telomeres are protected by shelterin, a multiprotein complex that binds the TTAGGG telomeric repeats and recruits a series of additional factors that are essential for telomere function. Although many shelterin-associated proteins have been so far identified, the inventory of shelterin-interacting factors required for telomere maintenance is still largely incomplete. Here, we characterize AKTIP/Ft1 (human AKTIP and mouse Ft1 are orthologous), a novel mammalian shelterin-bound factor identified on the basis of its homology with the Drosophila telomere protein Pendolino. AKTIP/Ft1 shares homology with the E2 variant ubiquitin-conjugating (UEV) enzymes and has been previously implicated in the control of apoptosis and in vesicle trafficking. RNAi-mediated depletion of AKTIP results in formation of telomere dysfunction foci (TIFs). Consistent with these results, AKTIP interacts with telomeric DNA and binds the shelterin components TRF1 and TRF2 both in vivo and in vitro. Analysis of AKTIP- depleted human primary fibroblasts showed that they are defective in PCNA recruiting and arrest in the S phase due to the activation of the intra S checkpoint. Accordingly, AKTIP physically interacts with PCNA and the RPA70 DNA replication factor. Ft1-depleted p53-/- MEFs did not arrest in the S phase but displayed significant increases in multiple telomeric signals (MTS) and sister telomere associations (STAs), two hallmarks of defective telomere replication. In addition, we found an epistatic relation for MST formation between Ft1 and TRF1, which has been previously shown to be required for replication fork progression through telomeric DNA. Ch-IP experiments further suggested that in AKTIP-depleted cells undergoing the S phase, TRF1 is less tightly bound to telomeric DNA than in controls. Thus, our results collectively

  17. Transcript Profile of Flowering Regulatory Genes in VcFT-Overexpressing Blueberry Plants.

    Directory of Open Access Journals (Sweden)

    Aaron E Walworth

    Full Text Available In order to identify genetic components in flowering pathways of highbush blueberry (Vaccinium corymbosum L., a transcriptome reference composed of 254,396 transcripts and 179,853 gene contigs was developed by assembly of 72.7 million reads using Trinity. Using this transcriptome reference and a query of flowering pathway genes of herbaceous plants, we identified potential flowering pathway genes/transcripts of blueberry. Transcriptome analysis of flowering pathway genes was then conducted on leaf tissue samples of transgenic blueberry cv. Aurora ('VcFT-Aurora', which overexpresses a blueberry FLOWERING LOCUS T-like gene (VcFT. Sixty-one blueberry transcripts of 40 genes showed high similarities to 33 known flowering-related genes of herbaceous plants, of which 17 down-regulated and 16 up-regulated genes were identified in 'VcFT-Aurora'. All down-regulated genes encoded transcription factors/enzymes upstream in the signaling pathway containing VcFT. A blueberry CONSTANS-LIKE 5-like (VcCOL5 gene was down-regulated and associated with five other differentially expressed (DE genes in the photoperiod-mediated flowering pathway. Three down-regulated genes, i.e., a MADS-AFFECTING FLOWERING 2-like gene (VcMAF2, a MADS-AFFECTING FLOWERING 5-like gene (VcMAF5, and a VERNALIZATION1-like gene (VcVRN1, may function as integrators in place of FLOWERING LOCUS C (FLC in the vernalization pathway. Because no CONSTAN1-like or FLOWERING LOCUS C-like genes were found in blueberry, VcCOL5 and VcMAF2/VcMAF5 or VRN1 might be the major integrator(s in the photoperiod- and vernalization-mediated flowering pathway, respectively. The major down-stream genes of VcFT, i.e., SUPPRESSOR of Overexpression of Constans 1-like (VcSOC1, LEAFY-like (VcLFY, APETALA1-like (VcAP1, CAULIFLOWER 1-like (VcCAL1, and FRUITFULL-like (VcFUL genes were present and showed high similarity to their orthologues in herbaceous plants. Moreover, overexpression of VcFT promoted expression of all of

  18. Designing means and specifications for model FT-619 kidney function instrument

    International Nuclear Information System (INIS)

    Yu Yongding

    1988-04-01

    In this paper, it is pointed out that the model FT-619 Kidney Function Equipment is a new cost-effective nuclear medicine instrument, which takes the leading position in China. The performance of the model FT-619,especially the lead collimated scintillation detector has reached the same level as the advanced equipment in the world market. It is also described in this article in detail that the design of the lead collimator and the shielding as well as the detection efficiency have achieved the optimum level and that a comparison has been made with foreign products

  19. Aeroderivative Pratt & Whitney FT8-3 gas turbine – an interesting solution for power generation

    Directory of Open Access Journals (Sweden)

    Sorinel-Gicu TALIF

    2011-03-01

    Full Text Available The intermediate load electric power stations become more and more interesting for theelectric power market in Romania. In this context, the Combined Cycle Power Plants came as a veryattractive solution. This paper presents the results of a study regarding the use of the aeroderivativePratt & Whitney FT8-3 gas turbine, available in Romania, for the electric power generation in aCombined Cycle Power Plant. It is also analyzed the Combined Heat in Power generation with FT8-3gas turbine when saturated steam or hot water are required.

  20. Transcript Profile of Flowering Regulatory Genes in VcFT-Overexpressing Blueberry Plants.

    Science.gov (United States)

    Walworth, Aaron E; Chai, Benli; Song, Guo-Qing

    2016-01-01

    In order to identify genetic components in flowering pathways of highbush blueberry (Vaccinium corymbosum L.), a transcriptome reference composed of 254,396 transcripts and 179,853 gene contigs was developed by assembly of 72.7 million reads using Trinity. Using this transcriptome reference and a query of flowering pathway genes of herbaceous plants, we identified potential flowering pathway genes/transcripts of blueberry. Transcriptome analysis of flowering pathway genes was then conducted on leaf tissue samples of transgenic blueberry cv. Aurora ('VcFT-Aurora'), which overexpresses a blueberry FLOWERING LOCUS T-like gene (VcFT). Sixty-one blueberry transcripts of 40 genes showed high similarities to 33 known flowering-related genes of herbaceous plants, of which 17 down-regulated and 16 up-regulated genes were identified in 'VcFT-Aurora'. All down-regulated genes encoded transcription factors/enzymes upstream in the signaling pathway containing VcFT. A blueberry CONSTANS-LIKE 5-like (VcCOL5) gene was down-regulated and associated with five other differentially expressed (DE) genes in the photoperiod-mediated flowering pathway. Three down-regulated genes, i.e., a MADS-AFFECTING FLOWERING 2-like gene (VcMAF2), a MADS-AFFECTING FLOWERING 5-like gene (VcMAF5), and a VERNALIZATION1-like gene (VcVRN1), may function as integrators in place of FLOWERING LOCUS C (FLC) in the vernalization pathway. Because no CONSTAN1-like or FLOWERING LOCUS C-like genes were found in blueberry, VcCOL5 and VcMAF2/VcMAF5 or VRN1 might be the major integrator(s) in the photoperiod- and vernalization-mediated flowering pathway, respectively. The major down-stream genes of VcFT, i.e., SUPPRESSOR of Overexpression of Constans 1-like (VcSOC1), LEAFY-like (VcLFY), APETALA1-like (VcAP1), CAULIFLOWER 1-like (VcCAL1), and FRUITFULL-like (VcFUL) genes were present and showed high similarity to their orthologues in herbaceous plants. Moreover, overexpression of VcFT promoted expression of all of these

  1. M4FT-15LL0806062-LLNL Thermodynamic and Sorption Data FY15 Progress Report

    Energy Technology Data Exchange (ETDEWEB)

    Zavarin, M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Wolery, T. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-08-31

    This progress report (Milestone Number M4FT-15LL0806062) summarizes research conducted at Lawrence Livermore National Laboratory (LLNL) within Work Package Number FT-15LL080606. The focus of this research is the thermodynamic modeling of Engineered Barrier System (EBS) materials and properties and development of thermodynamic databases and models to evaluate the stability of EBS materials and their interactions with fluids at various physicochemical conditions relevant to subsurface repository environments. The development and implementation of equilibrium thermodynamic models are intended to describe chemical and physical processes such as solubility, sorption, and diffusion.

  2. M4FT-16LL080302052-Update to Thermodynamic Database Development and Sorption Database Integration

    Energy Technology Data Exchange (ETDEWEB)

    Zavarin, Mavrik [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Glenn T. Seaborg Inst.. Physical and Life Sciences; Wolery, T. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Akima Infrastructure Services, LLC; Atkins-Duffin, C. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Global Security

    2016-08-16

    This progress report (Level 4 Milestone Number M4FT-16LL080302052) summarizes research conducted at Lawrence Livermore National Laboratory (LLNL) within the Argillite Disposal R&D Work Package Number FT-16LL08030205. The focus of this research is the thermodynamic modeling of Engineered Barrier System (EBS) materials and properties and development of thermodynamic databases and models to evaluate the stability of EBS materials and their interactions with fluids at various physico-chemical conditions relevant to subsurface repository environments. The development and implementation of equilibrium thermodynamic models are intended to describe chemical and physical processes such as solubility, sorption, and diffusion.

  3. Soil as a Sustainable Resource for the Bioeconomy - BonaRes

    Science.gov (United States)

    Wollschläger, Ute; Amelung, Wulf; Brüggemann, Nicolas; Brunotte, Joachim; Gebbers, Robin; Grosch, Rita; Heinrich, Uwe; Helming, Katharina; Kiese, Ralf; Leinweber, Peter; Reinhold-Hurek, Barbara; Veldkamp, Edzo; Vogel, Hans-Jörg; Winkelmann, Traud

    2017-04-01

    Fertile soils are a fundamental resource for the production of biomass and provision of food and energy. A growing world population and latest climate targets lead to an increasing demand for bio-based products which require preserving and - ideally - improving the long-term productivity of soils as a bio-economic resource. At the same time, other soil functions and ecosystem services need to be maintained: filter for clean water, carbon sequestration, provision and recycling of nutrients, and habitat for biological activity. All these soil functions result from the interaction of a multitude of physical, chemical and biological processes which are insufficiently understood. In addition, we lack understanding about the interplay between the socio-economic system and the soil system and how soil functions benefit human wellbeing, including SDGs. However, a solid and integrated assessment of soil quality requires the consideration of the ensemble of soil functions and its relation to soil management. To make soil management sustainable, we need to establish a scientific knowledge base of complex soil system processes that allows for developing models and tools to quantitatively predict the impact of a multitude of management measures on soil functions. This will finally allow for the provision of options for a site-specific, sustainable soil management. To face this challenge, the German Federal Ministry of Education and Research (BMBF) recently launched the funding program "Soil as a Sustainable Resource for the Bioeconomy - BonaRes". In a joint effort, ten collaborative projects and the coordinating BonaRes Centre are engaged to close existing knowledge gaps for a profound and systemic assessment and understanding of soil functions and their sensitivity to soil management. In BonaRes, the complete process chain of sustainable soil use in the context of a sustainable bio-economy is being addressed: from understanding of soil processes using state-of the art and

  4. Ultra-clean Fischer-Tropsch (F-T) Fuels Production and Demonstration Project

    Energy Technology Data Exchange (ETDEWEB)

    Stephen P. Bergin

    2006-06-30

    The objective of the DOE-NETL Fischer-Tropsch (F-T) Production and Demonstration Program was to produce and evaluate F-T fuel derived from domestic natural gas. The project had two primary phases: (1) fuel production of ultra-clean diesel transportation fuels from domestic fossil resources; and (2) demonstration and performance testing of these fuels in engines. The project also included a well-to-wheels economic analysis and a feasibility study of small-footprint F-T plants (SFPs) for remote locations such as rural Alaska. During the fuel production phase, ICRC partnered and cost-shared with Syntroleum Corporation to complete the mechanical design, construction, and operation of a modular SFP that converts natural gas, via F-T and hydro-processing reactions, into hydrogensaturated diesel fuel. Construction of the Tulsa, Oklahoma plant started in August 2002 and culminated in the production of over 100,000 gallons of F-T diesel fuel (S-2) through 2004, specifically for this project. That fuel formed the basis of extensive demonstrations and evaluations that followed. The ultra-clean F-T fuels produced had virtually no sulfur (less than 1 ppm) and were of the highest quality in terms of ignition quality, saturation content, backend volatility, etc. Lubricity concerns were investigated to verify that commercially available lubricity additive treatment would be adequate to protect fuel injection system components. In the fuel demonstration and testing phase, two separate bus fleets were utilized. The Washington DC Metropolitan Area Transit Authority (WMATA) and Denali National Park bus fleets were used because they represented nearly opposite ends of several spectra, including: climate, topography, engine load factor, mean distance between stops, and composition of normally used conventional diesel fuel. Fuel evaluations in addition to bus fleet demonstrations included: bus fleet emission measurements; F-T fuel cold weather performance; controlled engine dynamometer

  5. ResStock - Targeting Energy and Cost Savings for U.S. Homes

    Energy Technology Data Exchange (ETDEWEB)

    Wilson, Eric J [National Renewable Energy Laboratory (NREL), Golden, CO (United States)

    2017-09-29

    The ResStock analysis tool is helping states, municipalities, utilities, and manufacturers identify which home upgrades save the most energy and money. Across the country there's a vast diversity in the age, size, construction practices, installed equipment, appliances, and resident behavior of the housing stock, not to mention the range of climates. These variations have hindered the accuracy of predicting savings for existing homes. Researchers at the National Renewable Energy Laboratory (NREL) developed ResStock. It's a versatile tool that takes a new approach to large-scale residential energy analysis by combining: large public and private data sources, statistical sampling, detailed subhourly building simulations, high-performance computing. This combination achieves unprecedented granularity and most importantly - accuracy - in modeling the diversity of the single-family housing stock.

  6. The hidden flat like universe. Starobinsky-like inflation induced by f(T) gravity

    Energy Technology Data Exchange (ETDEWEB)

    El Hanafy, W. [The British University in Egypt, Centre for Theoretical Physics, P.O. Box 43, El Sherouk (Egypt); Egyptian Relativity Group, Giza (Egypt); Nashed, G.G.L. [The British University in Egypt, Centre for Theoretical Physics, P.O. Box 43, El Sherouk (Egypt); Ain Shams University, Mathematics Department, Faculty of Science, Cairo (Egypt); Egyptian Relativity Group, Giza (Egypt)

    2015-06-15

    We study a single-fluid component in a flat like universe (FLU) governed by f(T) gravity theories, where T is the teleparallel torsion scalar. The FLU model, regardless of the value of the spatial curvature k, identifies a special class of f(T) gravity theories. Remarkably, FLU f(T) gravity does not reduce to teleparallel gravity theory. In large Hubble spacetime the theory is consistent with the inflationary universe scenario and respects the conservation principle. The equation of state evolves similarly in all models k = 0,±1. We study the case when the torsion tensor consists of a scalar field, which enables to derive a quintessence potential from the obtained f(T) gravity theory. The potential produces Starobinsky-like model naturally without using a conformal transformation, with higher orders continuously interpolate between Starobinsky and quadratic inflation models. The slow-roll analysis shows double solutions, so that for a single value of the scalar tilt (spectral index) n{sub s} the theory can predict double tensor-to-scalar ratios r of E-mode and B-mode polarizations. (orig.)

  7. The hidden flat like universe. Starobinsky-like inflation induced by f(T) gravity

    International Nuclear Information System (INIS)

    El Hanafy, W.; Nashed, G.G.L.

    2015-01-01

    We study a single-fluid component in a flat like universe (FLU) governed by f(T) gravity theories, where T is the teleparallel torsion scalar. The FLU model, regardless of the value of the spatial curvature k, identifies a special class of f(T) gravity theories. Remarkably, FLU f(T) gravity does not reduce to teleparallel gravity theory. In large Hubble spacetime the theory is consistent with the inflationary universe scenario and respects the conservation principle. The equation of state evolves similarly in all models k = 0,±1. We study the case when the torsion tensor consists of a scalar field, which enables to derive a quintessence potential from the obtained f(T) gravity theory. The potential produces Starobinsky-like model naturally without using a conformal transformation, with higher orders continuously interpolate between Starobinsky and quadratic inflation models. The slow-roll analysis shows double solutions, so that for a single value of the scalar tilt (spectral index) n s the theory can predict double tensor-to-scalar ratios r of E-mode and B-mode polarizations. (orig.)

  8. Evaluation of Fungal Deterioration in Liquidambar orientalis Mill. heartwood by FT-IR and light microscopy.

    Science.gov (United States)

    Nural Yilgor; Dilek Dogu; Roderquita Moore; Evren Terzi; S. Nami Kartal

    2013-01-01

    The chemical and morphological changes in heartwood specimens of Liquidambar orientalis Mill. caused by the white-rot fungus Trametes versicolor and the brown-rot fungi Tyromyces palustris and Gloeophyllum trabeum were studied by wet chemistry, FT-IR, GC-MS analyses, and photo-...

  9. Assessment of Azithromycin in Pharmaceutical Formulation by Fourier-transform Infrared (FT-IR Transmission Spectroscopy

    Directory of Open Access Journals (Sweden)

    Muhammad Ali Mallah

    2011-12-01

    Full Text Available A simple, rapid and economical method for azithromycin quantification in solid tablet and capsule formulations has been developed by applying Fourier-transform Infrared (FT-IR transmission spectroscopy for regular quality monitoring. The newly developed method avoids the sample preparation, except grinding for pellet formation and does not involve consumption of any solvent as it absolutely eliminates the need of extraction. KBr pellets were employed for the appraisal of azithromycin while acquiring spectra of standards as well as samples on FT-IR. By selecting the FT-IR carbonyl band (C=O in the region 1,744–1,709 cm−1 the calibration model was developed based on simple Beer’s law. The excellent regression coefficient (R2 0.999 was accomplished for calibration set having standard error of calibration equal to 0.01 mg. The current work exposes that transmission FT-IR spectroscopy can definitely be applied to determine the exact amount of azithromycin to control the processing and quality of solid formulations with reduced cost and short analysis time.

  10. Non-trivial frames for f(T) theories of gravity and beyond

    International Nuclear Information System (INIS)

    Ferraro, Rafael; Fiorini, Franco

    2011-01-01

    Some conceptual issues concerning f(T) theories - a family of modified gravity theories based on absolute parallelism - are analyzed. Due to the lack of local Lorentz invariance, the autoparallel frames satisfying the field equations are evasive to an a priori physical understanding. We exemplify this point by working out the vierbein (tetrad) fields for closed and open Friedmann-Robertson-Walker cosmologies.

  11. The Fast Intelligent Tracking (F!T) tube: A CRT without a shadow mask

    NARCIS (Netherlands)

    Bergman, A.H.; Brink, van den H.B.; Budzelaar, F.P.M.; Engelaar, P.J.; Holtslag, A.H.M.; IJzerman, W.L.; Krijn, M.P.C.M.; Lieshout, van P.J.G.; Notari, A.; Willemsen, O.H.

    2003-01-01

    The F!T tube is a new type of CRT without a shadow mask. The primary function of the mask, color selection, is taken over by an electronic control system that guides the electron beams over the correct phosphor lines. The position of the beams is detected by means of dedicated structures on the

  12. Attenuated total reflectance-FT-IR spectroscopy for gunshot residue analysis: potential for ammunition determination.

    Science.gov (United States)

    Bueno, Justin; Sikirzhytski, Vitali; Lednev, Igor K

    2013-08-06

    The ability to link a suspect to a particular shooting incident is a principal task for many forensic investigators. Here, we attempt to achieve this goal by analysis of gunshot residue (GSR) through the use of attenuated total reflectance (ATR) Fourier transform infrared spectroscopy (FT-IR) combined with statistical analysis. The firearm discharge process is analogous to a complex chemical process. Therefore, the products of this process (GSR) will vary based upon numerous factors, including the specific combination of the firearm and ammunition which was discharged. Differentiation of FT-IR data, collected from GSR particles originating from three different firearm-ammunition combinations (0.38 in., 0.40 in., and 9 mm calibers), was achieved using projection to latent structures discriminant analysis (PLS-DA). The technique was cross (leave-one-out), both internally and externally, validated. External validation was achieved via assignment (caliber identification) of unknown FT-IR spectra from unknown GSR particles. The results demonstrate great potential for ATR-FT-IR spectroscopic analysis of GSR for forensic purposes.

  13. Near-wall effects in improved plasma confinement regimes in tokamak FT-2

    International Nuclear Information System (INIS)

    Budnikov, V.N.; D'yachenko, V.V.; Esipov, L.A.

    1997-01-01

    Transition to the regime of improved plasma confinement (H-mode) revealed in experiments on low hybrid heating in tokamak ft-2 is analyzed. Main attention is paid to processes, taking place in near-wall region. The data are correlated with results of experiments in large tokamaks

  14. Non-trivial frames for f(T) theories of gravity and beyond

    Energy Technology Data Exchange (ETDEWEB)

    Ferraro, Rafael, E-mail: ferraro@iafe.uba.ar [Instituto de Astronomia y Fisica del Espacio, Casilla de Correo 67, Sucursal 28, 1428 Buenos Aires (Argentina); Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); Fiorini, Franco, E-mail: franco@iafe.uba.ar [Instituto de Astronomia y Fisica del Espacio, Casilla de Correo 67, Sucursal 28, 1428 Buenos Aires (Argentina)

    2011-08-03

    Some conceptual issues concerning f(T) theories - a family of modified gravity theories based on absolute parallelism - are analyzed. Due to the lack of local Lorentz invariance, the autoparallel frames satisfying the field equations are evasive to an a priori physical understanding. We exemplify this point by working out the vierbein (tetrad) fields for closed and open Friedmann-Robertson-Walker cosmologies.

  15. Synthetic Fischer-Tropsch (FT) JP-5/JP-8 Aviation Turbine Fuel Elastomer Compatibility

    National Research Council Canada - National Science Library

    Muzzell, Pat; Stavinoha, Leo; Chapin, Rebecca

    2005-01-01

    ... to seal performance may arise, possibly leading to fuel leakage. The key objective of this study was to compare and contrast the material compatibility of nitrile coupons and O-rings with selected petroleum-derived fuels, Fisher-Tropsch (FT...

  16. The application of FT-IR spectrum method in photocuring process for polyester acrylate

    International Nuclear Information System (INIS)

    Cao Jin; Lu Xianliang; Zhang Zhenli

    1995-01-01

    This paper describes that the UV curing process of polyester acrylate can be monitored by measuring the degree of double bonds conversion with FT-IR spectroscopy. The various factors effect the UV curing rate. The relation between the curing rate and the concentration of photoinitiator, crosslinking agent, UV light intensity was discussed. (author)

  17. Agrobacterium-mediated transient MaFT expression in mulberry (Morus alba L.) leaves.

    Science.gov (United States)

    Wu, Su-Li; Yang, Xiao-Bing; Liu, Li-Qun; Jiang, Tao; Wu, Hai; Su, Chao; Qian, Yong-Hua; Jiao, Feng

    2015-01-01

    To optimize Agrobacterium-mediated transient transformation assay in mulberry (Morus alba L.), various infiltration methods, Agrobacterium tumefaciens (A. tumefaciens) strains, and bacterial concentrations were tested in mulberry seedlings. Compared with LBA4404, GV3101 harboring pBE2133 plasmids presented stronger GUS signals at 3 days post infiltration using syringe. Recombinant plasmids pBE2133:GFP and pBE2133:GFP:MaFT were successfully constructed. Transient expression of MaFT:GFP protein was found in leaves, petiole (cross section), and shoot apical meristem (SAM) of mulberry according to the GFP signal. Moreover, MaFT:GFP mRNA was also detected in leaves and SAM via RT-PCR and qRT-PCR. An efficient transient transformation system could be achieved in mulberry seedlings by syringe using A. tumefaciens GV3101 at the OD600 of 0.5. The movement of MaFT expression from leaves to SAM might trigger the precocious flowering of mulberry.

  18. Utility Assessment Report for SPIDERS Phase 2: Ft. Carson (Rev 1.0)

    Energy Technology Data Exchange (ETDEWEB)

    Barr, Jonathan L. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Tuffner, Francis K. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Hadley, Mark D. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Schneider, Kevin P. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2014-01-01

    This document contains the Utility Assessment Report (UAR) for the Phase 2 operational Demonstration (OD) of the Smart Power Infrastructure Demonstration for Energy Reliability and Security (SPIDERS) Joint Capability Technology Demonstration (JCTD). The UAR for Phase 2 shows that the SPIDERS system was able to meet the requirements of the Implementation Directive at Ft. Carson.

  19. Advanced sampling techniques for hand-held FT-IR instrumentation

    Science.gov (United States)

    Arnó, Josep; Frunzi, Michael; Weber, Chris; Levy, Dustin

    2013-05-01

    FT-IR spectroscopy is the technology of choice to identify solid and liquid phase unknown samples. The challenging ConOps in emergency response and military field applications require a significant redesign of the stationary FT-IR bench-top instruments typically used in laboratories. Specifically, field portable units require high levels of resistance against mechanical shock and chemical attack, ease of use in restrictive gear, extreme reliability, quick and easy interpretation of results, and reduced size. In the last 20 years, FT-IR instruments have been re-engineered to fit in small suitcases for field portable use and recently further miniaturized for handheld operation. This article introduces the HazMatID™ Elite, a FT-IR instrument designed to balance the portability advantages of a handheld device with the performance challenges associated with miniaturization. In this paper, special focus will be given to the HazMatID Elite's sampling interfaces optimized to collect and interrogate different types of samples: accumulated material using the on-board ATR press, dispersed powders using the ClearSampler™ tool, and the touch-to-sample sensor for direct liquid sampling. The application of the novel sample swipe accessory (ClearSampler) to collect material from surfaces will be discussed in some detail. The accessory was tested and evaluated for the detection of explosive residues before and after detonation. Experimental results derived from these investigations will be described in an effort to outline the advantages of this technology over existing sampling methods.

  20. 1064nm FT-Raman spectroscopy for investigations of plant cell walls and other biomass materials

    Science.gov (United States)

    Umesh P. Agarwal

    2014-01-01

    Raman spectroscopy with its various special techniques and methods has been applied to study plant biomass for about 30 years. Such investigations have been performed at both macro- and micro-levels. However, with the availability of the Near Infrared (NIR) (1064 nm) Fourier Transform (FT)-Raman instruments where, in most materials, successful fluorescence suppression...

  1. Antioxidant activity and FT-IR analysis of Datura innoxia and Datura ...

    African Journals Online (AJOL)

    Materials and Methods: Determination of total phenolic content and total flavonoid content and antioxidant activity in terms of total antioxidant assay, ABTS assay, DPPH assay and in-vitro lipid peroxidation inhibiting activity were determined along with the FT-IR (Fourier transform infrared spectroscopy) analysis of the ...

  2. Gerenciamento de resíduos odontológicos no serviço público

    Directory of Open Access Journals (Sweden)

    Lídia Regina da Costa Hidalgo

    Full Text Available OBJETIVO: Verificar o processo de gerenciamento dos resíduos odontológicos do serviço público de saúde em 11 municípios brasileiros. MATERIAL E MÉTODO: Uma única pesquisadora realizou as visitas e as observações foram anotadas em um roteiro previamente elaborado e testado. RESULTADO: Foram visitadas 50 unidades de saúde, sendo que nenhuma apresentou cópia do plano de gerenciamento de resíduos. Do total de estabelecimentos, 62% realizavam a correta segregação dos resíduos no momento da sua geração. A presença de recipientes adequados a cada tipo de resíduo gerado no consultório odontológico foi observada em 74% dos estabelecimentos e, destes, 94% apresentavam capacidade adequada ao tipo de resíduo gerado. A identificação do tipo de resíduo nas embalagens plásticas bem como anotações identificando o estabelecimento gerador dos resíduos foram encontradas em 8% e 6%, respectivamente. Somente 21% dos estabelecimentos apresentavam locais apropriados, de acordo com as normas vigentes, para o armazenamento dos resíduos até que fosse feita a coleta externa. CONCLUSÃO: Constatou-se na presente pesquisa que a rotina adotada pela rede pública de saúde bucal, no que tange ao gerenciamento de resíduos de saúde, apresentou falhas.

  3. Transcript Profile of Flowering Regulatory Genes in VcFT-Overexpressing Blueberry Plants

    Science.gov (United States)

    Walworth, Aaron E.; Chai, Benli; Song, Guo-qing

    2016-01-01

    In order to identify genetic components in flowering pathways of highbush blueberry (Vaccinium corymbosum L.), a transcriptome reference composed of 254,396 transcripts and 179,853 gene contigs was developed by assembly of 72.7 million reads using Trinity. Using this transcriptome reference and a query of flowering pathway genes of herbaceous plants, we identified potential flowering pathway genes/transcripts of blueberry. Transcriptome analysis of flowering pathway genes was then conducted on leaf tissue samples of transgenic blueberry cv. Aurora (‘VcFT-Aurora’), which overexpresses a blueberry FLOWERING LOCUS T-like gene (VcFT). Sixty-one blueberry transcripts of 40 genes showed high similarities to 33 known flowering-related genes of herbaceous plants, of which 17 down-regulated and 16 up-regulated genes were identified in ‘VcFT-Aurora’. All down-regulated genes encoded transcription factors/enzymes upstream in the signaling pathway containing VcFT. A blueberry CONSTANS-LIKE 5-like (VcCOL5) gene was down-regulated and associated with five other differentially expressed (DE) genes in the photoperiod-mediated flowering pathway. Three down-regulated genes, i.e., a MADS-AFFECTING FLOWERING 2-like gene (VcMAF2), a MADS-AFFECTING FLOWERING 5-like gene (VcMAF5), and a VERNALIZATION1-like gene (VcVRN1), may function as integrators in place of FLOWERING LOCUS C (FLC) in the vernalization pathway. Because no CONSTAN1-like or FLOWERING LOCUS C-like genes were found in blueberry, VcCOL5 and VcMAF2/VcMAF5 or VRN1 might be the major integrator(s) in the photoperiod- and vernalization-mediated flowering pathway, respectively. The major down-stream genes of VcFT, i.e., SUPPRESSOR of Overexpression of Constans 1-like (VcSOC1), LEAFY-like (VcLFY), APETALA1-like (VcAP1), CAULIFLOWER 1-like (VcCAL1), and FRUITFULL-like (VcFUL) genes were present and showed high similarity to their orthologues in herbaceous plants. Moreover, overexpression of VcFT promoted expression of all

  4. The future has come: the 100% RES driven power system is reality

    International Nuclear Information System (INIS)

    Orths, Antje; Borre Eriksen, Peter

    2016-01-01

    The Danish political energy and climate targets fixed in the RES (Renewable Energy Sources) directive require Denmark to reach a 30 % RES share of its total energy consumption in 2020. Besides, Danish national targets aim at wind power production to correspond to 50 % of domestic gross electricity consumption (status in 2015: 42 %). For 2050, the political target is to be free of fossil fuels in the whole energy sector - i.e. including transportation. The major part of variable RES in Denmark is wind energy, the remaining power consumption mainly based on biomass, gas and coal fired central power stations and local CHP plants. Some key figures: at the end of 2015, 5,076 MW wind power capacity and 783 MW of solar power capacity were installed in Denmark, with Danish peak load at ∼6.400 MW and the total electricity consumption at 33.6 TWh. Wind power is split into 3,805 MW onshore and 1.272 MW offshore installations. In 2015, wind power produced 14.1 TWh electricity (9.3 TWh onshore, 4.8 TWh offshore), which made a ∼42 % share of the Danish electricity consumption, while solar power produced 0.6 TWh. The high RES level is already today challenging the system e.g. concerning the need for flexibility on the one hand, or by pushing power plants delivering important system services out of the market on the other hand. To fulfill the political ambitions, new arrangements concerning the technical and market design incentivizing flexibility or ancillary services, such as frequency control and voltage control, are needed and currently under development. This article gives examples and illustrates the urgency by showing a real dispatch in a windy week. (authors)

  5. Les Dynamiques Transfrontalières En Afrique De L'ouest

    International Development Research Centre (IDRC) Digital Library (Canada)

    Si l'approche « classique » de l'intégration régionale, qui a jusqu'à ... mettre en exergue une réalité territoriale matérialisée par l'existence d'une frontière ...... La demande alimentaire des métropoles côtières stimule ainsi la production des ...

  6. EPRI/NRC-RES fire PRA guide for nuclear power facilities. Volume 1, summary and overview

    International Nuclear Information System (INIS)

    2004-01-01

    This report documents state-of-the-art methods, tools, and data for the conduct of a fire Probabilistic Risk Assessment (PRA) for a commercial nuclear power plant (NPP) application. The methods have been developed under the Fire Risk Re-quantification Study. This study was conducted as a joint activity between EPRI and the U. S. NRC Office of Nuclear Regulatory Research (RES) under the terms of an EPRI/RES Memorandum of Understanding (RS.1) and an accompanying Fire Research Addendum (RS.2). Industry participants supported demonstration analyses and provided peer review of this methodology. The documented methods are intended to support future applications of Fire PRA, including risk-informed regulatory applications. The documented method reflects state-of-the-art fire risk analysis approaches. The primary objective of the Fire Risk Study was to consolidate recent research and development activities into a single state-of-the-art fire PRA analysis methodology. Methodological issues raised in past fire risk analyses, including the Individual Plant Examination of External Events (IPEEE) fire analyses, have been addressed to the extent allowed by the current state-of-the-art and the overall project scope. Methodological debates were resolved through a consensus process between experts representing both EPRI and RES. The consensus process included a provision whereby each major party (EPRI and RES) could maintain differing technical positions if consensus could not be reached. No cases were encountered where this provision was invoked. While the primary objective of the project was to consolidate existing state-of-the-art methods, in many areas, the newly documented methods represent a significant advancement over previously documented methods. In several areas, this project has, in fact, developed new methods and approaches. Such advances typically relate to areas of past methodological debate.

  7. Resíduos de aves e suínos: Potencialidades

    Directory of Open Access Journals (Sweden)

    Tiago Luan Hachmann

    2014-05-01

    Full Text Available O crescimento intenso da população mundial aumenta a demanda por alimentos. As carnes de frango e de suíno são as fontes mais exploradas de proteína na alimentação humana. Porém, com os métodos intensivos de produção, esses sistemas tem gerado insatisfação quanto ao aspecto ambiental e tem sido questionados quanto à sua sustentabilidade. A disposição inadequada dos resíduos gerados nos criatórios de suínos e aves afeta diretamente a qualidade do meio ambiente e a saúde pública. Assim deve-se buscar alternativas para minimizar os impactos causados ao meio, melhorando o aproveitamento e destinação desses resíduos. A aplicação desses resíduos nas áreas de produção agrícola é favorável à, tendo em vista que são uma fonte de nutrientes de grande demanda pelas culturas. Além disso é uma forma sustentável para destinação dos resíduos, já que promove seu reaproveitamento de forma a não poluir o ambiente e com alto retorno econômico. Dessa forma é possível aliar preservação ambiental com progresso econômico, promovendo uma produção sustentável.

  8. Bajenu Gox : une approche communautaire pour la santé des mères ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    initiative de Bajenu Gox à l'amélioration de la santé des mères et des enfants dans tout le Sénégal. L'ancien président Abdoulye Wade a fondé ce programme communautaire destiné aux travailleurs de la santé en vue de donner à des femmes ...

  9. Culture et exercice du pouvoir par les femmes dans les sphères de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Culture et exercice du pouvoir par les femmes dans les sphères de décisions en Afrique de l'Ouest. Cette recherche s'inscrit dans le contexte d'une superposition de deux faits : l'existence d'un arsenal juridique et de dispositions nationales et internationales favorables à une intégration des femmes dans les instances de ...

  10. Attitude towards working in rural areas: a cross-sectional survey of rural-oriented tuition-waived medical students in Shaanxi, China.

    Science.gov (United States)

    Liu, Jinlin; Zhang, Kun; Mao, Ying

    2018-05-02

    Attracting and recruiting health workers to work in rural areas is still a great challenge in China. The rural-oriented tuition-waived medical education (RTME) programme has been initiated and implemented in China since 2010. This study aimed to examine the attitudes of rural-oriented tuition-waived medical students (RTMSs) in Shaanxi towards working in rural areas and the related influencing factors. A cross-sectional survey was conducted in 2015 among 232 RTMSs in two medical universities from the first group of students enrolled in the RTME programme in Shaanxi. Descriptive and analytical statistics were used for the data analyses. Of the 230 valid responses, 92.6% expressed their intentions of breaking the contract for working in rural township hospitals for 6 years after their graduation under the RTME programme. After the contract expired, only 1.3% intended to remain in the rural areas, 66.5% had no intention of remaining, and 32.2% were unsure. The factors related to a positive attitude among the RTMSs towards working in rural areas (no intention of breaking the contract) included being female, having a mother educated at the level of primary school or below, having a good understanding of the policy, having a good cognition of the value of rural medical work, and being satisfied with the policy. The factors related to a positive attitude of the RTMSs towards remaining in rural areas included being female, having a rural origin, having no regular family monthly income, having a father whose occupation was farmer, having a mother educated at the level of postsecondary or above, having the RTMSs be the final arbiter of the policy choice, having a good understanding of the policy, having a good cognition of the value of rural medical work, and being satisfied with the educational scheme. Related policy makers and health workforce managers may benefit from the findings of this study. Appropriate strategies should be implemented to stimulate the RTMSs

  11. Innovative method of RES integration into the regional energy development scenarios

    International Nuclear Information System (INIS)

    Klevas, Valentinas; Biekša, Kestutis; Murauskaitė, Lina

    2014-01-01

    Scarcity or abundance of energy resources usually depends on physical and geographical conditions in the region. However, the energy flow in the region also depends on the efficient use of energy resources, the consumption rate of energy and the possibility to use local renewable and non-renewable energy resources. Production, distribution and the use of energy resources in the region are the challenges for central and local government, business and social service, customers and other stakeholders. Development of regional energy economy should be optimized according to the available energy flow in the region using a network system analysis method, which provides solutions for developing sustainable energy economy models. The network system analysis method enables to optimize the use of local and renewable resources at the regional level and reveals available local energy resources. An efficient use of available regional resources and the use of renewable energy sources (RES) should be the main goals for the development of regional energy system. RES can compete with traditional fossil fuel with the condition that all hidden aspects are revealed. The network system analysis method enables to indicate energy flows in the region as well as indicate pros and cons of using renewable energy technologies. - Highlights: • RES integration into the regional energy development scenarios is done. • Innovative process network system (PNS) analysis method is used. • PNS method is used to optimize the use of local and renewable resources. • Analysis of energy flow in region using PNS method is done

  12. The Response Regulator ResD Plays a Role in Metabolism of Listeria monocytogenes

    DEFF Research Database (Denmark)

    Larsen, Marianne Halberg; Sørensen, Martine; Ingmer, Hanne

    to be transmitted to food processing plants from where it can establish and survive for extended periods of time contaminating processed food products. Recently we have identified the response regulator ResD of L. monocytogenes and showed that it is important for growth in laboratory media and for sugar uptake...... in the upstream regulatory region of several genes of L. monocytogenes and the binding of the ResD protein to some of these regulatory regions upstream putative target genes is analysed by electrophoretic mobility shift assays (EMSAs). In conclusion, the response regulator ResD act is important for metabolisme...

  13. Valorização de resíduos em materiais de construção

    OpenAIRE

    Pinho, Paulo André Martins de

    2014-01-01

    O trabalho desenvolvido nesta dissertação enquadra-se no objetivo geral de valorização de resíduos provenientes de unidades de pasta Kraft de eucalipto, nomeadamente cinzas de fundo e cinzas volantes das fornalhas de biomassa. Atualmente uma das mais graves preocupações das sociedades dos países desenvolvidos passa por encontrar um destino adequado para resíduos gerados. A construção civil, aliada com a indústria da produção de pasta e papel que por ano gera milhares de toneladas de resídu...

  14. Heterozygous Mutations in TREX1 Cause Familial Chilblain Lupus and Dominant Aicardi-Goutières Syndrome

    Science.gov (United States)

    Rice, Gillian; Newman, William G.; Dean, John; Patrick, Teresa; Parmar, Rekha; Flintoff, Kim; Robins, Peter; Harvey, Scott; Hollis, Thomas; O’Hara, Ann; Herrick, Ariane L.; Bowden, Andrew P.; Perrino, Fred W.; Lindahl, Tomas; Barnes, Deborah E.; Crow, Yanick J.

    2007-01-01

    TREX1 constitutes the major 3′→5′ DNA exonuclease activity measured in mammalian cells. Recently, biallelic mutations in TREX1 have been shown to cause Aicardi-Goutières syndrome at the AGS1 locus. Interestingly, Aicardi-Goutières syndrome shows overlap with systemic lupus erythematosus at both clinical and pathological levels. Here, we report a heterozygous TREX1 mutation causing familial chilblain lupus. Additionally, we describe a de novo heterozygous mutation, affecting a critical catalytic residue in TREX1, that results in typical Aicardi-Goutières syndrome. PMID:17357087

  15. Putative sugarcane FT/TFL1 genes delay flowering time and alter reproductive architecture in Arabidopsis

    Directory of Open Access Journals (Sweden)

    Carla P. Coelho

    2014-05-01

    Full Text Available Agriculturally important grasses such as rice, maize and sugarcane are evolutionarily distant from Arabidopsis, yet some components of the floral induction process are highly conserved. Flowering in sugarcane is an important factor that negatively affects cane yield and reduces sugar/ethanol production from this important perennial bioenergy crop. Comparative studies have facilitated the identification and characterization of putative orthologs of key flowering time genes in sugarcane, a complex polyploid plant whose genome has yet to be sequenced completely. Using this approach we identified phosphatidylethanolamine-binding protein (PEBP gene family members in sugarcane that are similar to the archetypical FT and TFL1 genes of Arabidopsis that play an essential role in controlling the transition from vegetative to reproductive growth. Expression analysis of ScTFL1, which falls into the TFL1-clade of floral repressors, showed transcripts in developing leaves surrounding the shoot apex but not at the apex itself. ScFT1 was detected in immature leaves and apical regions of vegetatively growing plants and, after the floral transition, expression also occurred in mature leaves. Ectopic over-expression of ScTFL1 in Arabidopsis caused delayed flowering in Arabidopsis, as might be expected for a gene related to TFL1. In addition, lines with the latest flowering phenotype exhibited aerial rosette formation. Unexpectedly, over-expression of ScFT1, which has greatest similarity to the florigen-encoding FT, also caused a delay in flowering. This preliminary analysis of divergent sugarcane FT and TFL1 gene family members from Saccharum spp. suggests that their expression patterns and roles in the floral transition has diverged from the predicted role of similar PEBP family members.

  16. Putative sugarcane FT/TFL1 genes delay flowering time and alter reproductive architecture in Arabidopsis.

    Science.gov (United States)

    Coelho, Carla P; Minow, Mark A A; Chalfun-Júnior, Antonio; Colasanti, Joseph

    2014-01-01

    Agriculturally important grasses such as rice, maize, and sugarcane are evolutionarily distant from Arabidopsis, yet some components of the floral induction process are highly conserved. Flowering in sugarcane is an important factor that negatively affects cane yield and reduces sugar/ethanol production from this important perennial bioenergy crop. Comparative studies have facilitated the identification and characterization of putative orthologs of key flowering time genes in sugarcane, a complex polyploid plant whose genome has yet to be sequenced completely. Using this approach we identified phosphatidylethanolamine-binding protein (PEBP) gene family members in sugarcane that are similar to the archetypical FT and TFL1 genes of Arabidopsis that play an essential role in controlling the transition from vegetative to reproductive growth. Expression analysis of ScTFL1, which falls into the TFL1-clade of floral repressors, showed transcripts in developing leaves surrounding the shoot apex but not at the apex itself. ScFT1 was detected in immature leaves and apical regions of vegetatively growing plants and, after the floral transition, expression also occurred in mature leaves. Ectopic over-expression of ScTFL1 in Arabidopsis caused delayed flowering in Arabidopsis, as might be expected for a gene related to TFL1. In addition, lines with the latest flowering phenotype exhibited aerial rosette formation. Unexpectedly, over-expression of ScFT1, which has greatest similarity to the florigen-encoding FT, also caused a delay in flowering. This preliminary analysis of divergent sugarcane FT and TFL1 gene family members from Saccharum spp. suggests that their expression patterns and roles in the floral transition has diverged from the predicted role of similar PEBP family members.

  17. US defensive operations against Libya and the nuclear accident at Chernobyl. Markup before the Committee on Foreign Affairs, House of Representatives, Ninety-Ninth Congress, Second Session on H. Res. 424 and H. Res 440, May 1, 1986

    International Nuclear Information System (INIS)

    Anon.

    1986-01-01

    The House Foreign Affairs Committee met to mark up two resolutions: H. Res. 424 and H. Res. 440. H. Res. 424 thanks the United Kingdom for its assistance in the April 14, 1986 operation against Libya. Despite objections to the raid and to including the British, as well as questions about the quality of the US response and about the President's compliance with the Constitution and the War Powers Resolution, the resolution passed. H. Res. 440 expresses sympathy to the victims of the Chernobyl accident and asks the Soviet Union to relax restrictions on communications and the transfer of whatever technology and assistance will be helpful. It also criticizes the Soviet handling of information about the accident. An amendment strengthened the wording of the criticism, and the resolution passed. The report includes the committee discussion and the tests of the two resolutions

  18. Curcumin-β-cyclodextrin inclusion complex: stability, solubility, characterisation by FT-IR, FT-Raman, X-ray diffraction and photoacoustic spectroscopy, and food application.

    Science.gov (United States)

    Mangolim, Camila Sampaio; Moriwaki, Cristiane; Nogueira, Ana Claudia; Sato, Francielle; Baesso, Mauro Luciano; Neto, Antônio Medina; Matioli, Graciette

    2014-06-15

    Curcumin was complexed with β-CD using co-precipitation, freeze-drying and solvent evaporation methods. Co-precipitation enabled complex formation, as indicated by the FT-IR and FT-Raman techniques via the shifts in the peaks that were assigned to the aromatic rings of curcumin. In addition, photoacoustic spectroscopy and X-ray diffraction, with the disappearance of the band related to aromatic rings, by Gaussian fitting, and modifications in the spectral lines, respectively, also suggested complex formation. The possible complexation had an efficiency of 74% and increased the solubility of the pure colourant 31-fold. Curcumin-β-CD complex exhibited a sunlight stability 18% higher than the pure colourant. This material was stable to pH variations and storage at -15 and 4°C. With an isothermal heating at 100 and 150°C for 2h, the material exhibited a colour retention of approximately 99%. The application of curcumin-β-CD complex in vanilla ice creams intensified the colour of the products and produced a great sensorial acceptance. Copyright © 2013 Elsevier Ltd. All rights reserved.

  19. Acid-base properties, FT-IR, FT-Raman spectroscopy and computational study of 1-(pyrid-4-yl)piperazine.

    Science.gov (United States)

    Mary, Y Sheena; Panicker, C Yohannan; Varghese, Hema Tresa; Van Alsenoy, Christian; Procházková, Markéta; Sevčík, Richard; Pazdera, Pavel

    2014-01-01

    We report the vibrational spectral analysis was carried out using FT-IR and FT-Raman spectroscopy for 1-(pyrid-4-yl)piperazine (PyPi). Single crystals of PyPi suitable for X-ray structural analysis were obtained. The acid-base properties are also reported. PyPi supported on a weak acid cation-exchanger in the single protonated form and this system can be used efficiently as the solid supported analogue of 4-N,N-dimethyl-aminopyridine. The complete vibrational assignments of wavenumbers were made on the basis of potential energy distribution. The HOMO and LUMO analysis is used to determine the charge transfer within the molecule and with the molecular electrostatic potential map was applied for the reactivity assessment of PyPi molecule toward proton, electrophiles and nucleopholes as well. The stability of the molecule arising from hyper-conjugative interaction and charge delocalization has been analyzed using NBO analysis. The calculated first hyperpolarizability of PyPi is 17.46 times that of urea. Copyright © 2013 Elsevier B.V. All rights reserved.

  20. Ab initio and DFT study of hydrogen bond interactions between ascorbic acid and dimethylsulfoxide based on FT-IR and FT-Raman spectra

    Science.gov (United States)

    Niazazari, Naser; Zatikyan, Ashkhen L.; Markarian, Shiraz A.

    2013-06-01

    The hydrogen bonding of 1:1 complexes formed between L-ascorbic acid (LAA) and dimethylsulfoxide (DMSO) has been studied by means of ab initio and density functional theory (DFT) calculations. Solutions of L-ascorbic acid (AA) in dimethylsulfoxide (DMSO) have been studied by means of both FT-IR (4000-220 cm-1) and FT-Raman spectroscopy. Ab initio Hartree-Fock (HF) and DFT methods have been used to determine the structure and energies of stable conformers of various types of L-AA/DMSO complexes in gas phase and solution. The basis sets 6-31++G∗∗ and 6-311+G∗ were used to describe the structure, energy, charges and vibrational frequencies of interacting complexes in the gas phase. The optimized geometric parameters and interaction energies for various complexes at different theories have been estimated. Binding energies have been corrected for basis set superposition error (BSSE) and harmonic vibrational frequencies of the structures have been calculated to obtain the stable forms of the complexes. The self-consistent reaction field (SCRF) has been used to calculate the effect of DMSO as the solvent on the geometry, energy and charges of complexes. The solvent effect has been studied using the Onsager models. It is shown that the polarity of the solvent plays an important role on the structures and relative stabilities of different complexes. The results obtained show that there is a satisfactory correlation between experimental and theoretical predictions.

  1. Molecular vibrational investigation [FT-IR, FT-Raman, UV-Visible and NMR] on Bis(thiourea) Nickel chloride using HF and DFT calculations

    Science.gov (United States)

    Anand, S.; Sundararajan, R. S.; Ramachandraraja, C.; Ramalingam, S.; Durga, R.

    2015-03-01

    In the present research work, the FT-IR, FT-Raman spectra of the Bis(thiourea) Nickel chloride (BTNC) were recorded and analyzed. The observed fundamental frequencies in finger print and functional group regions were assigned according to their uniqueness region. The computational calculations were carried out by HF and DFT (B3LYP and B3PW91) methods with 6-31++G(d,p) and 6-311++G(d,p) basis sets and the corresponding results were tabulated. The present organo-metallic compound was made up of covalent and coordination covalent bonds. The modified vibrational pattern of the complex molecule associated with ligand group was analyzed. Furthermore, the 13C NMR and 1H NMR spectral data were calculated by using the gauge independent atomic orbital (GIAO) method with B3LYP/6-311++G(d,p) basis set and their spectra were simulated and the chemical shifts linked to TMS were compared. A investigation on the electronic and optical properties; absorption wavelengths, excitation energy, dipole moment and frontier molecular orbital energies were carried out. The kubo gap of the present compound was calculated related to HOMO and LUMO energies which confirm the occurring of charge transformation between the base and ligand. Besides frontier molecular orbitals (FMO), molecular electrostatic potential (MEP) was performed. The NLO properties related to Polarizability and hyperpolarizability based on the finite-field approach were also discussed.

  2. Spectroscopic [FT-IR and FT-Raman] and theoretical [UV-Visible and NMR] analysis on α-Methylstyrene by DFT calculations

    Science.gov (United States)

    Karthikeyan, N.; Joseph Prince, J.; Ramalingam, S.; Periandy, S.

    2015-05-01

    In the present research work, the FT-IR, FT-Raman and 13C and 1H NMR spectra of the α-Methylstyrene were recorded. The observed fundamental frequencies in finger print as well as functional group regions were assigned according to their uniqueness region. The Gaussian computational calculations are carried out by HF and DFT (B3LYP and B3PW91) methods with 6-31++G(d,p) and 6-311++G(d,p) basis sets and the corresponding results were tabulated. The impact of the presence of vinyl group in phenyl structure of the compound is investigated. The modified vibrational pattern of the molecule associated vinyl group was analyzed. Moreover, 13C NMR and 1H NMR were calculated by using the gauge independent atomic orbital (GIAO) method with B3LYP methods and the 6-311++G(d,p) basis set and their spectra were simulated and the chemical shifts linked to TMS were compared. A study on the electronic and optical properties; absorption wavelengths, excitation energy, dipole moment and frontier molecular orbital energies were carried out. The kubo gap of the present compound was calculated related to HOMO and LUMO energies which confirm the occurring of charge transformation between the base and ligand. Besides frontier molecular orbitals (FMO), molecular electrostatic potential (MEP) was performed. The NLO properties related to Polarizability and hyperpolarizability based on the finite-field approach were also discussed.

  3. Prediction of purine derivatives, creatinine and total nitrogen concentrations in urine by FT-Near-lnfrared Reflectance spectroscopy (FT-NIR)

    International Nuclear Information System (INIS)

    Susmel, P.; Piani, B.; Toso, B.; Stefanon, B.

    2004-01-01

    The objective of this study was to provide an alternative method for the determination of purine derivatives (PD, which include allantoin, uric acid, hypoxanthine and xanthine), creatinine and total nitrogen (N) concentrations in urine. About 180 urine samples from cattle, buffaloes and rabbit were collected and analyzed for PD by HPLC, creatinine by spectrophotometry and N by Kjeldahl method. The urine samples were then analyzed by Fourier Transformed Near Infrared Reflectance Spectroscopy (FT-NIR) to find conformity between this technique and the HPLC and colorimetric methods. FT-NIR can predict allantoin, uric acid, hypoxanthine, xanthine, creatinine, total N and sum of N in both allantoin and uric acid with a satisfactory level of accuracy: the determination coefficient (r 2 ) of validation ranged from 0.888% for uric acid to 0.982% for total N. The coefficients of determination for allantoin, creatinine and sum of N in both allantoin and uric acid were 0.92, 0.894 and 0.90%, respectively. Hypoxanthine and xanthine in urine samples were not detectable by NIRS, probably because of their low concentrations, and therefore they were not considered for instrumental calibration. (author)

  4. Evaluation of a setting reaction pathway in the novel composite TiHA-CSD bone cement by FT-Raman and FT-IR spectroscopy

    Science.gov (United States)

    Paluszkiewicz, Czesława; Czechowska, Joanna; Ślósarczyk, Anna; Paszkiewicz, Zofia

    2013-02-01

    The aim of this study was to determine a setting reaction pathway in a novel, surgically handy implant material, based on calcium sulfate hemihydrate (CSH) and titanium doped hydroxyapatite (TiHA). The previous studies confirmed superior biological properties of TiHA in comparison to the undoped hydroxyapatite (HA) what makes it highly attractive for future medical applications. In this study the three types of titanium modified HA powders: untreated, calcined at 800 °C, sintered at 1250 °C and CSH were used to produce bone cements. The Fourier Transform-InfraRed (FT-IR) spectroscopy and Raman spectroscopy were applied to evaluate processes taking place during the setting of the studied materials. Our results undoubtedly confirmed that the reaction pathways and the phase compositions differed significantly for set cements and were dependent on the initial heat treatment of TiHA powder. Final materials were multiphase composites consisting of calcium sulfate dihydrate, bassanite, tricalcium phosphate, hydroxyapatite and calcium titanate (perovskite). The FT-IR and Scanning Electron Microscopy (SEM) measurements performed after the incubation of the cement samples in the simulated body fluid (SBF), indicate on high bioactive potential of the obtained bone cements.

  5. Experimental and theoretical studies of (FT-IR, FT-Raman, UV-Visible and DFT) 4-(6-methoxynaphthalen-2-yl) butan-2-one.

    Science.gov (United States)

    Govindasamy, P; Gunasekaran, S

    2015-01-01

    In this work, the vibrational spectral analysis was carried out by using FT-Raman and FT-IR spectroscopy in the range 4000-50 cm(-1) and 4000-450 cm(-1) respectively for 4-(6-methoxynaphthalen-2-yl) butan-2-one (abbreviated as 4MNBO) molecule. Theoretical calculations were performed by density functional theory (DFT/B3LYP) method using 6-311G(d,p) and 6-311++G(d,p) basis sets. The difference between the observed and calculated wavenumber value of most of the fundamentals were very small. The complete vibrational assignments of wavenumbers were made on the basis of potential energy distribution (PED). The UV-Vis spectrum was recorded in the methanol solution. The energy, wavelength and oscillator's strength were calculated by Time Dependent Density Functional Theory (TD-DFT) and matched to the experimental findings. The intramolecular contacts have been interpreted using natural bond orbital (NBO) and natural localized molecular orbital (NLMO) analysis. Thermodynamic properties of 4MNBO at different temperature have been calculated. The molecular electrostatic potential surface (MESP) and Frontier molecular orbital's (FMO's) analysis were investigated using theoretical calculations. Copyright © 2015 Elsevier B.V. All rights reserved.

  6. Molecular vibrational investigation [FT-IR, FT-Raman, UV-Visible and NMR] on Bis(thiourea) Nickel chloride using HF and DFT calculations.

    Science.gov (United States)

    Anand, S; Sundararajan, R S; Ramachandraraja, C; Ramalingam, S; Durga, R

    2015-03-05

    In the present research work, the FT-IR, FT-Raman spectra of the Bis(thiourea) Nickel chloride (BTNC) were recorded and analyzed. The observed fundamental frequencies in finger print and functional group regions were assigned according to their uniqueness region. The computational calculations were carried out by HF and DFT (B3LYP and B3PW91) methods with 6-31++G(d,p) and 6-311++G(d,p) basis sets and the corresponding results were tabulated. The present organo-metallic compound was made up of covalent and coordination covalent bonds. The modified vibrational pattern of the complex molecule associated with ligand group was analyzed. Furthermore, the (13)C NMR and (1)H NMR spectral data were calculated by using the gauge independent atomic orbital (GIAO) method with B3LYP/6-311++G(d,p) basis set and their spectra were simulated and the chemical shifts linked to TMS were compared. A investigation on the electronic and optical properties; absorption wavelengths, excitation energy, dipole moment and frontier molecular orbital energies were carried out. The kubo gap of the present compound was calculated related to HOMO and LUMO energies which confirm the occurring of charge transformation between the base and ligand. Besides frontier molecular orbitals (FMO), molecular electrostatic potential (MEP) was performed. The NLO properties related to Polarizability and hyperpolarizability based on the finite-field approach were also discussed. Crown Copyright © 2014. Published by Elsevier B.V. All rights reserved.

  7. Preparation and characterizations of SnO2 nanopowder and spectroscopic (FT-IR, FT-Raman, UV-Visible and NMR) analysis using HF and DFT calculations.

    Science.gov (United States)

    Ayeshamariam, A; Ramalingam, S; Bououdina, M; Jayachandran, M

    2014-01-24

    In this work, pure and singe phase SnO2 Nano powder is successfully prepared by simple sol-gel combustion route. The photo luminescence and XRD measurements are made and compared the geometrical parameters with calculated values. The FT-IR and FT-Raman spectra are recorded and the fundamental frequencies are assigned. The optimized parameters and the frequencies are calculated using HF and DFT (LSDA, B3LYP and B3PW91) theory in bulk phase of SnO2 and are compared with its Nano phase. The vibrational frequency pattern in nano phase gets realigned and the frequencies are shifted up to higher region of spectra when compared with bulk phase. The NMR and UV-Visible spectra are simulated and analyzed. Transmittance studies showed that the HOMO-LUMO band gap (Kubo gap) is reduced from 3.47 eV to 3.04 eV while it is heated up to 800°C. The Photoluminescence spectra of SnO2 powder showed a peak shift towards lower energy side with the change of Kubo gap from 3.73 eV to 3.229 eV for as-prepared and heated up to 800°C. Crown Copyright © 2013. Published by Elsevier B.V. All rights reserved.

  8. The spectroscopic (FT-IR, FT-Raman, UV and NMR) first order hyperpolarizability and HOMO-LUMO analysis of dansyl chloride

    Science.gov (United States)

    Karabacak, M.; Cinar, M.; Kurt, M.; Poiyamozhi, A.; Sundaraganesan, N.

    2014-01-01

    The solid phase FT-IR and FT-Raman spectra of dansyl chloride (DC) have been recorded in the regions 400-4000 and 50-4000 cm-1, respectively. The spectra have been interpreted in terms of fundamentals modes, combination and overtone bands. The structure of the molecule has been optimized and the structural characteristics have been determined by density functional theory (B3LYP) method with 6-311++G(d,p) as basis set. The vibrational frequencies were calculated for most stable conformer and were compared with the experimental frequencies, which yield good agreement between observed and calculated frequencies. The infrared and Raman spectra have also been predicted from the calculated intensities. 1H and 13C NMR spectra were recorded and 1H and 13C nuclear magnetic resonance chemical shifts of the molecule were calculated using the gauge independent atomic orbital (GIAO) method. UV-Visible spectrum of the compound was recorded in the region 200-600 nm and the electronic properties HOMO and LUMO energies were measured by time-dependent TD-DFT approach. Nonlinear optical and thermodynamic properties were interpreted. All the calculated results were compared with the available experimental data of the title molecule.

  9. FT-Raman, FT-IR spectra and total energy distribution of 3-pentyl-2,6-diphenylpiperidin-4-one: DFT method.

    Science.gov (United States)

    Subashchandrabose, S; Saleem, H; Erdogdu, Y; Rajarajan, G; Thanikachalam, V

    2011-11-01

    FT-Raman and FT-IR spectra were recorded for 3-pentyl-2,6-diphenylpiperidin-4-one (PDPO) sample in solid state. The equilibrium geometries, harmonic vibrational frequencies, infrared and the Raman scattering intensities were computed using DFT/6-31G(d,p) level. Results obtained at this level of theory were used for a detailed interpretation of the infrared and Raman spectra, based on the total energy distribution (TED) of the normal modes. Molecular parameters such as bond lengths, bond angles and dihedral angles were calculated and compared with X-ray diffraction data. This comparison was good agreement. The intra-molecular charge transfer was calculated by means of natural bond orbital analysis (NBO). Hyperconjugative interaction energy was more during the π-π* transition. Energy gap of the molecule was found using HOMO and LUMO calculation, hence the less band gap, which seems to be more stable. Atomic charges of the carbon, nitrogen and oxygen were calculated using same level of calculation. Copyright © 2011 Elsevier B.V. All rights reserved.

  10. Quantum computational studies, spectroscopic (FT-IR, FT-Raman and UV-Vis) profiling, natural hybrid orbital and molecular docking analysis on 2,4 Dibromoaniline

    Science.gov (United States)

    Abraham, Christina Susan; Prasana, Johanan Christian; Muthu, S.; Rizwana B, Fathima; Raja, M.

    2018-05-01

    The research exploration will comprise of investigating the molecular structure, vibrational assignments, bonding and anti-bonding nature, nonlinear optical, electronic and thermodynamic nature of the molecule. The research is conducted at two levels: First level employs the spectroscopic techniques - FT-IR, FT-Raman and UV-Vis characterizing techniques; at second level the data attained experimentally is analyzed through theoretical methods using and Density Function Theories which involves the basic principle of solving the Schrodinger equation for many body systems. A comparison is drawn between the two levels and discussed. The probability of the title molecule being bio-active theoretically proved by the electrophilicity index leads to further property analyzes of the molecule. The target molecule is found to fit well with Centromere associated protein inhibitor using molecular docking techniques. Higher basis set 6-311++G(d,p) is used to attain results more concurrent to the experimental data. The results of the organic amine 2, 4 Dibromoaniline is analyzed and discussed.

  11. Quantum mechanical, spectroscopic studies (FT-IR, FT-Raman, NMR, UV) and normal coordinates analysis on 3-([2-(diaminomethyleneamino) thiazol-4-yl] methylthio)-N'-sulfamoylpropanimidamide

    Science.gov (United States)

    Muthu, S.; Uma Maheswari, J.; Sundius, Tom

    2013-05-01

    Famotidine (3-([2-(diaminomethyleneamino) thiazol-4-yl] methylthio)-N'-sulfamoylpropanimidamide) is a histamine H2-receptor antagonist that inhibits stomach acid production, and it is commonly used in the treatment of peptic ulcer disease (PUD) and gastroesophageal reflux disease (GERD/GORD). Quantum chemical calculations of the equilibrium geometry of famotidine in the ground state were carried out using density functional theory (DFT/B3LYP) with the 6-311G(d,p) basis set. In addition, harmonic vibrational frequencies, infrared intensities and Raman activities were calculated at the same level of theory. A detailed interpretation of the infrared and Raman spectrum of the drug is also reported. Theoretical simulations of the FT-IR, and FT-Raman spectra of the title compound have been calculated. Good correlations between the experimental 1H and 13C NMR chemical shifts and calculated GIAO shielding tensors were found. The results of the energy and oscillator strength calculations by time-dependent density functional theory (TD-DFT) supplement the experimental findings. Total and partial density of state (TDOS and PDOS) and also overlap population density of state (COOP or OPDOS) diagrams analysis were presented. The dipole moment, linear polarizability and first order hyperpolarizability values were also computed. The linear polarizability and first order hyperpolarizabilities of the studied molecule indicate that the compound is a good candidate for nonlinear optical materials.

  12. Determination of alkaloids in capsules, milk and ethanolic extracts of poppy (Papaver somniferum L.) by ATR-FT-IR and FT-Raman spectroscopy.

    Science.gov (United States)

    Schulz, Hartwig; Baranska, Malgorzata; Quilitzsch, Rolf; Schütze, Wolfgang

    2004-10-01

    Fourier transform (FT) infrared spectroscopy using a diamond composite ATR crystal and NIR-FT-Raman spectroscopy techniques were applied for the simultaneous identification and quantification of the most important alkaloids in poppy capsules. Most of the characteristic Raman signals of the alkaloids can be identified in poppy milk isolated from unripe capsules. But also poppy extracts present specific bands relating clearly to the alkaloid fraction. Raman spectra obtained by excitation with a Nd:YAG laser at 1064 nm show no disturbing fluorescence effects; therefore the plant tissue can be recorded without any special preparation. The used diamond ATR technique allows to measure very small sample amounts (5-10 microL or 2-5 mg) without the necessity to perform time-consuming pre-treatments. When applying cluster analysis a reliable discrimination of "low-alkaloid" and "high-alkaloid" poppy single-plants can be easily achieved. The examples presented in this study provide clear evidence of the benefits of Raman and ATR-IR spectroscopy in efficient quality control, forensic analysis and high-throughput evaluation of poppy breeding material.

  13. Relationship between the quality of children's handwriting and the Beery Buktenica developmental test of visuomotor integration after one year of writing tuition.

    Science.gov (United States)

    Duiser, Ivonne H F; van der Kamp, John; Ledebt, Annick; Savelsbergh, Geert J P

    2014-04-01

    We examined whether the three subtests of the Beery Buktenica developmental test of visuomotor integration predicted quality of handwriting across and within groups of boys and girls classified as proficient, at risk or non-proficient writers according to the Concise Assessment Scale for Children's Handwriting. The Beery Buktenica developmental test of visuomotor integration and the Concise Assessment Scale for Children's Handwriting tests were administered to 240 grade 2 children. Proficient writers scored better on the visuomotor integration subtest than non-proficient writers, while proficient and at risk writers scored better than non-proficient writers on the motor coordination subtest. No differences were found on the visual perception subtest. Girls were more often classified as proficient writers than boys, and they scored better on the motor coordination subtest. Across groups, regression indicated that gender and both the visuomotor integration subtest and the motor coordination subtest were significant predictors for the quality of handwriting (i.e., accounted for 17% of the variance). After one year of writing tuition, the visuomotor integration subtest (and to a lesser extent the motor coordination subtest) but not the visual perception subtest significant relates to quality of children's handwriting as measured with the Concise Assessment Scale for Children's Handwriting. However, the relatively little variance explained also points to other abilities and/or task constraints that underlie quality of handwriting. © 2013 Occupational Therapy Australia.

  14. Collaborative Student Laboratory Exercise Using FT-IR Spectroscopy for the Kinetics Study of a Biotin Analogue

    Science.gov (United States)

    Leong, Jhaque; Ackroyd, Nathan C.; Ho, Karen

    2014-01-01

    The synthesis of N-methoxycarbonyl-2-imidazolidone, an analogue of biotin, was conducted by organic chemistry students and confirmed using FT-IR and H NMR. Spectroscopy students used FT-IR to measure the rate of hydrolysis of the product and determined the rate constant for the reaction using the integrated rate law. From the magnitude of the rate…

  15. Uso de resíduos de gesso como corretivo em solo salino-sódico

    OpenAIRE

    Santos, Paulo Medeiros dos; Rolim, Mario Monteiro; Duarte, Anamaria Sousa; Barros, Maria de Fátima Cavalcanti; Silva, Ênio Farias de França e

    2014-01-01

    Um dos grandes problemas enfrentados pelo setor da construção civil é a destinação final de resíduos, principalmente os resíduos de gesso, que têm sua aptidão para reciclagem restringida. No entanto, tais resíduos possuem altos teores de cálcio, em sua composição, podendo ser uma alternativa ao uso de gesso de jazida, na recuperação de solos salino-sódicos. Esta pesquisa objetivou avaliar a eficiência do uso de resíduos de gesso provenientes da construção civil, em relação ao gesso de jazida,...

  16. Hubungan Kadar FT4 dengan Gejala Klinis yang Terkait Efek Simpatis berdasarkan Indek Wayne pada Nagari Koto Salak Kabupaten Dharmasraya

    Directory of Open Access Journals (Sweden)

    Nining Kurniawati

    2015-05-01

    Full Text Available AbstrakPeningkatan aktivitas saraf simpatis dapat terjadi pada keadaan hipertiroid dan sebaliknya pada hipotiroid. Pengukuran kadar hormon tiroid dilakukan dengan mengukur kadar FT4, FT3, TSH, dll. Tujuan penelitian ini adalah untuk mengidentifikasi hubungan kadar FT4 dengan gejala klinis yang terkait efek simpatis di Nagari Koto Salak Kabupaten Dharmasraya. Penelitian ini menggunakan desain penelitian cross sectional study. Hasil penelitian didapatkan subjek dengan peningkatan kadar FT4 12,96%. Subjek dengan gejala klinis palpitasi, penurunan berat badan, nervous, berkeringat lebih dan tremor jari halus dengan persentase berturut-turut adalah 42,59%, 38,89%, 46,30%, 25,93% dan 44,44%. Analisis bivariat dengan menggunakan uji statistik chi-square diperoleh hasil tidak ada hubungan hubungan kadar FT4 dengan 5 gejala klinis yang terkait efek simpatis berdasarkan indeks Wayne (p > 0.05. Penelitian ini masih sederhana dan belum bisa menunjukkan adanya hubungan antara kadar FT4 dengan gejala klinis yang terkait efek simpatis. Sebaiknya untuk penelitian yang akan datang diharapkan dapat memiliki jumlah sampel yang banyak dan cakupan gejala klinis lain yang terlibat dalam aktivitas saraf simpatis yang lebih luas sehingga dapat lebih lengkap dan spesifik.Kata kunci: Kadar FT4, efek simpatis, gejala klinis AbstractIncreased sympathetic nerve activity may occur in the state of hyperthyroidism and conversely in hypothyroidism. Measurement of thyroid hormone levels is done by measuring the levels of FT4, FT3, TSH, etc. The objective of this study was to identify the relation between FT4 levels and the clinical symptoms of sympathetic effects in Nagari Koto Salak Kabupaten Dharmasraya. This research used cross sectional study design. According to the research found that subjects with elevated levels of FT4 12.96%. There are subjects with clinical symptoms of palpitations, weight loss, nervousness, sweating more and fine finger tremor by the following

  17. Power utility generation portfolio optimization as function of specific RES and decarbonisation targets – EPBiH case study

    International Nuclear Information System (INIS)

    Kazagic, Anes; Merzic, Ajla; Redzic, Elma; Music, Mustafa

    2014-01-01

    Highlights: • Guidelines for power utilities to reach specific decarbonisation targets offered. • Optimization model of RES share to be introduced into power system is proposed. • Single criteria analysis and multicriteria sustainability assessment are applied. • The optimization method has been demonstrated on a real power system. • In the considered case, HIGH RES scenario showed to be the preferable one. - Abstract: This paper provides guidelines and principles for power utilities to reach specific energy and decarbonisation targets. Method of power generation portfolio optimization, as function of sustainability and decarbonisation, along with appropriate criteria, has been proposed. Application of this optimization method has been demonstrated on a real power system – power utility JP Elektroprivreda BiH d.d. – Sarajevo (EPBiH), a typical example of South East European power system. The software tool WASP IV has been employed in the analysis, in order to define the dynamics and an optimized expansion of generation portfolio of the power system under consideration for the next period. The mid-term generation portfolio development plan for the EPBiH power system until year 2030 has been made during this research, taking into account the shutdown dynamics of existing power units and commissioning new ones, in order to provide safe supply of electric and heat energy for local consumers. Three basic scenario of renewable energy sources (RES) expansion have been analysed to reach specific RES and decarbonisation targets set for 2030, including RES share increase from the current level of 18% up to 35% (LOW RES), 45% (MID RES) and 55% (HIGH RES). Effects to the sustainability are considered through environmental, economic and social indicators. Multicriteria sustainability assessment gave an advantage to the HIGH RES, under assumption of equal weighting factors of economic and environment groups of indicators. Also, single criteria analysis has been

  18. The effect of heparin administration on the FT4-levels and on an unspecific peripheral thyroid parameter

    International Nuclear Information System (INIS)

    Eber, B.; Borkenstein, J.; Leb, G.

    1984-01-01

    Heparin produces changes in FT 4 -levels both in vivo and in vitro as determined by commercial kits. Methods utilising the principle of equilibrium dialysis show significant increases whereas methods using T 4 -tracer analogue techniques reveal marked decreases in FT 4 -values. Possible clinical side-effects of heparin administration such as heparin-induced hyperthyroidism and tachyarrhythmias are discussed. The present results confirm the FT 4 -decreasing effect of in vivo and in vitro administration of heparin with FT 4 -RIAs based on the tracer analogue technique; however, the unspecific peripheral thyroid parameter of systolic time-intervals did not reveal any tendency towards hyperthyroidism. Also the discrepant results dependent on the method used, indicate that, following heparin administration FT 4 -levels do not reflect that hormone concentration is relevant to the metabolism of the whole body. (orig.) [de

  19. Innovation pour la santé des mères et des enfants d'Afrique | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    L'initiative Innovation pour la santé des mères et des enfants d'Afrique (ISMEA) cherche à améliorer la santé des mères, des nouveau-nés et des enfants en ... Cette initiative de 36 millions de dollars sur sept ans – financée conjointement par les Instituts de recherche en santé du Canada, Affaires mondiales Canada et le ...

  20. Mobilidade de metais pesados em solo tratado com resíduo siderúrgico ácido

    Directory of Open Access Journals (Sweden)

    N. M. B. Amaral Sobrinho

    1998-06-01

    Full Text Available Amostras do horizonte Bt de um Podzólico Vermelho-Amarelo (PV, predominante no aterro-piloto de resíduos industriais (ARSI da Companhia Siderúrgica Nacional (CSN, foram acondicionadas, em 1992, em colunas de vidro com 5,4 cm de diâmetro e 37 cm de altura. Sobre essas amostras de solo foram colocadas amostras de um resíduo ácido da CSN na proporção solo-resíduo de 4:1 (conforme a concepção básica do projeto do ARSI. Tal sistema resíduo-solo foi lixiviado com 50 volumes-poro de água deionizada, com pH 4,5, com o objetivo de avaliar a movimentação de Cr, Mn, Ni, Cu, Zn, Cd e Pb nas colunas. Depois da lixiviação, removeu-se o resíduo do topo das colunas, e seccionaram-se as amostras de solo em 4 partes iguais. Os metais pesados das amostras do resíduo e do solo foram extraídos seqüencialmente. 0 Pb, Cu e Cr mobilizados do resíduo ficaram retidos nos primeiros 5 cm da coluna de solo. 0 Zn, Mn, Ni e Cd tiveram aumento da concentração em profundidade. Nos efluentes das colunas com o resíduo, foram observadas concentrações de Mn e Ni bem superiores aos padrões permitidos pela Fundação Estadual de Engenharia do Meio Ambiente (FEEMA, 1985.

  1. 195 Evaluation de la charge polluante des rivières des eaux usées ...

    African Journals Online (AJOL)

    kapepula

    ressources financières des pouvoirs publics au niveau local et l'absence de réelles politiques environnementales sont parmi les ... sont collectés vers les quatre rivières. Généralement les aides de la gestion des déchets adéquates protègent la santé humaine et l'environnement et conserve les ressources naturelles [3].

  2. Chemical Vapor Deposition Growth of Degenerate p-Type Mo-Doped ReS2 Films and Their Homojunction.

    Science.gov (United States)

    Qin, Jing-Kai; Shao, Wen-Zhu; Xu, Cheng-Yan; Li, Yang; Ren, Dan-Dan; Song, Xiao-Guo; Zhen, Liang

    2017-05-10

    Substitutional doping of transition metal dichalcogenide two-dimensional materials has proven to be effective in tuning their intrinsic properties, such as band gap, transport characteristics, and magnetism. In this study, we realized substitutional doping of monolayer rhenium disulfide (ReS 2 ) with Mo via chemical vapor deposition. Scanning transmission electron microscopy demonstrated that Mo atoms are successfully doped into ReS 2 by substitutionally replacing Re atoms in the lattice. Electrical measurements revealed the degenerate p-type semiconductor behavior of Mo-doped ReS 2 field effect transistors, in agreement with density functional theory calculations. The p-n diode device based on a doped ReS 2 and ReS 2 homojunction exhibited gate-tunable current rectification behaviors, and the maximum rectification ratio could reach up to 150 at V d = -2/+2 V. The successful synthesis of p-type ReS 2 in this study could largely promote its application in novel electronic and optoelectronic devices.

  3. Loading Intensity Prediction by Velocity and the OMNI-RES 0-10 Scale in Bench Press.

    Science.gov (United States)

    Naclerio, Fernando; Larumbe-Zabala, Eneko

    2017-02-01

    Naclerio, F and Larumbe-Zabala, E. Loading intensity prediction by velocity and the OMNI-RES 0-10 scale in bench press. J Strength Cond Res 32(1): 323-329, 2017-This study examined the possibility of using movement velocity and the perceived exertion as indicators of relative load in the bench press (BP) exercise. A total of 308 young, healthy, resistance trained athletes (242 men and 66 women) performed a progressive strength test up to the one repetition maximum for the individual determination of the full load-velocity and load-exertion relationships. Longitudinal regression models were used to predict the relative load from the average velocity (AV) and the OMNI-Resistance Exercise Scales (OMNI-RES 0-10 scale), considering sets as the time-related variable. Load associated with the AV and the OMNI-RES 0-10 scale value expressed after performing a set of 1-3 repetitions were used to construct 2 adjusted predictive equations: Relative load = 107.75 - 62.97 × average velocity; and Relative load = 29.03 + 7.26 × OMNI-RES 0-10 scale value. The 2 models were capable of estimating the relative load with an accuracy of 84 and 93%, respectively. These findings confirm the ability of the 2 calculated regression models, using load-velocity and load-exertion from the OMNI-RES 0-10 scale, to accurately predict strength performance in BP.

  4. Signal-to-noise ratio of FT-IR CO gas spectra

    DEFF Research Database (Denmark)

    Bak, J.; Clausen, Sønnik

    1999-01-01

    in emission and transmission spectrometry, an investigation of the SNR in CO gas spectra as a function of spectral resolution has been carried out. We present a method to (1) determine experimentally the SNR at constant throughput, (2) determine the SNR on the basis of measured noise levels and Hitran......The minimum amount of a gaseous compound which can be detected and quantified with Fourier transform infrared (FT-IR) spectrometers depends on the signal-to-noise ratio (SNR) of the measured gas spectra. In order to use low-resolution FT-IR spectrometers to measure combustion gases like CO and CO2...... simulated signals, and (3) determine the SNR of CO from high to low spectral resolutions related to the molecular linewidth and vibrational-rotational lines spacing. In addition, SNR values representing different spectral resolutions but scaled to equal measurement times were compared. It was found...

  5. Analysis of Polyadipate Ester Content in PVC Plastics by Means of FT-Raman Spectroscopy

    DEFF Research Database (Denmark)

    Berg, Rolf W.

    2006-01-01

    Plasticizers are needed in flexible PVC (PolyVinylChloride) products. There is serious concern that commonly used phthalate esters may harm life reproduction systems. To avoid the problems, instead adipate di-esters (AEs) of C8 to C10 alcohols are used as higher prized alternatives; e.g. di-2......-ethylhexyl adipate or DEHA [103-23-1], also known as Adimoll or di-octyl adipate, DOA. A widely used plasticizer in food (cling) films is DEHA, often in combination with polymers, epoxidized soya-bean oil, etcetera. DEHA also occurs in children toys. We have previously shown that the presence of phthalate...... esters in PVC can be rapidly analyzed by Fourier transform (FT-) Raman spectroscopy excited with a 1064 nm laser. Here in this project we report a similar study. The aim was to find out whether FT-Raman spectroscopy can be used to determine the presence of adipate esters (AEs) as plasticizers...

  6. Aplicação de FT-MIR e FT-NIR ao estudo de reação de cura de sistemas epoxídicos FT-IR MIR and FT-NIR applied to the study of reaction of epoxy systems

    Directory of Open Access Journals (Sweden)

    Benedita M. V. Romão

    2004-09-01

    Full Text Available A reação de cura entre amostras de resina epoxídica (EP e compostos à base de mercaptana (SH, amino-fenol e amina modificada foi estudada nas regiões espectrais do infravermelho médio (MIR e próximo (NIR. Observou-se, basicamente, que a espectroscopia FT-NIR evidencia melhor as alterações espectrométricas ocorridas durante as reações estudadas, permitindo detectar, inclusive, o agente de cura em menor proporção no sistema epoxídico.The cure reaction of epoxy resin (EP and curing agents based on polymercaptans (SH, amine-phenol and modified amine was studied in the MIR and NIR spectral regions. It was observed that the FT-NIR shows better the spectrometric changes of the reactions studied, which makes it possible to detect the curing agent in lower contents in epoxide systems.

  7. Prediction of the lifetime of nitrile-butadiene rubber by FT-IR.

    Science.gov (United States)

    Kawashima, Tetsuya; Ogawa, Toshio

    2005-12-01

    A quantitative measurement method with FT-IR was proposed for a thermal degradation analysis of nitrile-butadiene rubber (NBR). An NBR film was prepared as a model sample on a barium fluoride (BaF2) crystal plate, which was subjected to a heat treatment. The absorbances of various functional groups were measured directly by FT-IR after thermal degradation at high temperatures. By measuring the absorbances, it was possible to readily determine quantitatively each of the functional groups after the degradation of NBR. By assuming that the NBR lifetime was the point at which the absorbance of a carbon-carbon double bond reaches 45% of that prior to thermal treatment, a method for predicting the lifetime of NBR heated below 150 degrees C was proposed, by using an Arrhenius plot of the heating time versus heating temperature.

  8. Detection of creatinine enriched on a surface imprinted polystyrene film using FT-ATR-IR.

    Science.gov (United States)

    Sreenivasan, K

    2006-01-01

    The surface of polystyrene (PS) was chemically modified by coating a thin layer of polyaniline (PANI) by oxidizing aniline using ammonium persulfate. Affinity sites for creatinine, a clinically relevant molecule, were created in the coated layer by adding creatinine as print molecules during the oxidation. The imprinted layer adsorbed creatinine was compared to non-imprinted surface reflecting the creation of creatinine-specific sites on the surface. The equilibrium was attained rapidly, indicating that a material of this kind is suitable for sensing applications. The adsorbed creatinine on the surface was detected using the technique of Fourier transform attenuated total internal reflection infra red spectroscopy (FT-ATR-IR). The results show that molecularly imprinted surface can enrich molecules of interest and the enriched molecules can be detected using FT-IR.

  9. Application of FT-IR Classification Method in Silica-Plant Extracts Composites Quality Testing

    Science.gov (United States)

    Bicu, A.; Drumea, V.; Mihaiescu, D. E.; Purcareanu, B.; Florea, M. A.; Trică, B.; Vasilievici, G.; Draga, S.; Buse, E.; Olariu, L.

    2018-06-01

    Our present work is concerned with the validation and quality testing efforts of mesoporous silica - plant extracts composites, in order to sustain the standardization process of plant-based pharmaceutical products. The synthesis of the silica support were performed by using a TEOS based synthetic route and CTAB as a template, at room temperature and normal pressure. The silica support was analyzed by advanced characterization methods (SEM, TEM, BET, DLS and FT-IR), and loaded with Calendula officinalis and Salvia officinalis standardized extracts. Further desorption studies were performed in order to prove the sustained release properties of the final materials. Intermediate and final product identification was performed by a FT-IR classification method, using the MID-range of the IR spectra, and statistical representative samples from repetitive synthetic stages. The obtained results recommend this analytical method as a fast and cost effective alternative to the classic identification methods.

  10. Dielectric and FT-Raman spectroscopic approach to molecular identification of breast tumor tissues.

    Science.gov (United States)

    Abd El-Hakam, Rasha; Khalil, Safaa; Mahani, Ragab

    2015-01-01

    FT-Raman spectra and dielectric properties of benign and malignant women breast tissues in vitro were investigated. FT-Raman spectra for the malignant tissues showed a remarkably decrease in the lipid/protein ratio. Dielectric properties of women breast tissues measured in the low frequency range (42-10(6)Hz) were interpreted in spite of electrode polarization effect. Experimental results showed a contrast between the dielectric properties of malignant (Grade II) and benign tissues within the frequency range studied. The permittivity of malignant to normal breast tissue was found to be 160:1 while it could be 1.3:1 for fibrocystic breast tissues. These findings could contribute to distinguish between two breast tissues. The differences in spectral features between benign and malignant tissues may lead to breast cancer detection. Copyright © 2015 Elsevier B.V. All rights reserved.

  11. FINAL DESIGN REVIEW REPORT Subcritical Experiments Gen 2, 3-ft Confinement Vessel Weldment

    Energy Technology Data Exchange (ETDEWEB)

    Romero, Christopher [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-09-28

    A Final Design Review (FDR) of the Subcritical Experiments (SCE) Gen 2, 3-ft. Confinement Vessel Weldment was held at Los Alamos National Laboratory (LANL) on September 14, 2017. The review was a focused review on changes only to the confinement vessel weldment (versus a system design review). The changes resulted from lessons-learned in fabricating and inspecting the current set of confinement vessels used for the SCE Program. The baseline 3-ft. confinement vessel weldment design has successfully been used (to date) for three (3) high explosive (HE) over-tests, two (2) fragment tests, and five (5) integral HE experiments. The design team applied lessons learned from fabrication and inspection of these vessel weldments to enhance fit-up, weldability, inspection, and fitness for service evaluations. The review team consisted of five (5) independent subject matter experts with engineering design, analysis, testing, fabrication, and inspection experience. The

  12. Study of the Pyrrol/Diphenylamine Copolymer by FT-IR spectroscopy and conductivity

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Perez

    2004-01-01

    Full Text Available The main goal of this study was to analyze the physical properties of the copolymer formed by the electrochemical deposition of the polydiphenylamine (PDPA on polypyrrole (Ppy and Ppy on PDPA, in different conditions, through the characterization of the materials formed by the resonant Raman, FT-IR and conductivity techniques. The interactions among the species which are present in the new copolymer structure and the changes in electronic conductivity, were verified. The copolymer was also synthesized electrochemically in the presence of iodide species and the material was characterized by FT-IR spectroscopy and conductivity. The role of the dopant was studied in the process of charge transfer between the copolymer-dopant, acting in the stabilization of the species in the polymer backbone and the increase of the electronic conductivity.

  13. Preliminary study of corrosion mechanisms of actinides alloys: calibration of FT-IR spectroscopy

    International Nuclear Information System (INIS)

    Magnien, Veronique; Cadignan, Marx; Faivret, Olivier; Rosa, Gaelle

    2008-01-01

    In situ analyzes of gaseous atmospheres could be performed by FT-IR spectroscopy in order to study the corrosion reactions of actinides. Nevertheless experimental conditions and the nature of studied species have a strong effect on IR absorption laws. Thus a prior calibration of our set-up is required to obtain an accurate estimation of gas concentration. For this purpose, the behavior of several air pure gases has been investigated according to their concentration from IR spectra. Reproducible results revealed subsequent increases of the most significant peak areas with gas pressure and small deviations from Beer Lambert's law. This preliminary work allowed to determine precise absorption laws for each studied pure gas in our in situ experimental conditions. Besides our FT-IR set-up was well suitable to quantitative analysis of gaseous atmosphere during corrosion reactions. Finally the effect of foreign gas will be investigated through more complex air mixtures to obtain a complete calibration network. (authors)

  14. Determination of the Mechanical Properties of Rubber by FT-NIR

    OpenAIRE

    Pornprasit, Rattapol; Pornprasit, Philaiwan; Boonma, Pruet; Natwichai, Juggapong

    2016-01-01

    Mechanical tests, for example, tensile and hardness tests, are usually used to evaluate the properties of rubber materials. In this work, mechanical properties of selected rubber materials, that is, natural rubber (NR), styrene butadiene rubber (SBR), nitrile butadiene rubber (NBR), and ethylene propylene diene monomer (EPDM), were evaluated using a near infrared (NIR) spectroscopy technique. Here, NR/NBR and NR/EPDM blends were first prepared. All of the samples were then scanned using a FT-...

  15. Unlocking Ft: Modeling thermodynamic controls and isotope fractionation factors in nutrient limited environments

    Science.gov (United States)

    Druhan, J. L.; Giannetta, M.; Sanford, R. A.

    2017-12-01

    In recent years, reactive transport principles have expanded from early applications, largely based in contaminant hydrology, to a wide range of biologically mediated redox environments including marine sedimentary diagenesis, terrestrial metal ore deposits, soils, and critical zone weathering profiles. A common observation across this diversity of systems is that they often function under energetically limited conditions in comparison to those typical of contaminated aquifers subject to engineered remediation techniques. As a result, the kinetic rate expressions traditionally employed within reactive transport frameworks to simulate microbially mediated redox transformations have required modification. This was recognized in a series of seminal papers by Jin and Bethke (2005, 2007) in which the authors expanded upon a Monod rate law to include a thermodynamic potential factor `Ft' which exerts a limitation on the overall rate based on the thermodynamic driving force of the electron transfer reaction. This new rate expression is now commonly implemented within many of the major reactive transport software packages, though appropriate application has yet to be thoroughly demonstrated. Notably, the characteristically large partitioning of stable isotopes during microbially mediated reactions, which is extensively utilized to identify and quantify these redox transformations, has yet to be simulated under conditions in which the Ft term may be expected to exert a significant mass dependent influence. Here, we develop a series of simplified simulations for the microbially mediated reduction of sulfate based on the datasets reported by Jin and Bethke, and apply appropriate mass-bias within the Ft term to consider the extent to which the resulting isotopic fractionation is consistent with that observed in energetically limited systems. We show that the Ft term can exert a significant influence on the observed fractionation factor under common environmental conditions

  16. S. Afr. J, Anim. Sci 4, 55-60(1974) EVIDENCE FOR A FT ...

    African Journals Online (AJOL)

    Sci 4, 55-60(1974). EVIDENCE FOR A FT,JNCTIONAL ROLE OF THE PINEAL IN BOVINES. M.lf{.M. llryes, B.K. Knight and R.B. Symington. RreiptofnSr.e.T3. Deprtment of Amtomy, Univasity of Rhodesh, &lisbury, Rhodesia. ONOIIIMING;. BEWYSE VIR 'N .FI,,NKSIONELE ROL VAN DIE EPIFISE TN DIE BEES. Dat die epifisc ...

  17. Polytypism and unexpected strong interlayer coupling in two-dimensional layered ReS2

    Science.gov (United States)

    Qiao, Xiao-Fen; Wu, Jiang-Bin; Zhou, Linwei; Qiao, Jingsi; Shi, Wei; Chen, Tao; Zhang, Xin; Zhang, Jun; Ji, Wei; Tan, Ping-Heng

    2016-04-01

    Anisotropic two-dimensional (2D) van der Waals (vdW) layered materials, with both scientific interest and application potential, offer one more dimension than isotropic 2D materials to tune their physical properties. Various physical properties of 2D multi-layer materials are modulated by varying their stacking orders owing to significant interlayer vdW coupling. Multilayer rhenium disulfide (ReS2), a representative anisotropic 2D material, was expected to be randomly stacked and lack interlayer coupling. Here, we demonstrate two stable stacking orders, namely isotropic-like (IS) and anisotropic-like (AI) N layer (NL, N > 1) ReS2 are revealed by ultralow- and high-frequency Raman spectroscopy, photoluminescence and first-principles density functional theory calculation. Two interlayer shear modes are observed in AI-NL-ReS2 while only one shear mode appears in IS-NL-ReS2, suggesting anisotropic- and isotropic-like stacking orders in IS- and AI-NL-ReS2, respectively. This explicit difference in the observed frequencies identifies an unexpected strong interlayer coupling in IS- and AI-NL-ReS2. Quantitatively, the force constants of them are found to be around 55-90% of those of multilayer MoS2. The revealed strong interlayer coupling and polytypism in multi-layer ReS2 may stimulate future studies on engineering physical properties of other anisotropic 2D materials by stacking orders.Anisotropic two-dimensional (2D) van der Waals (vdW) layered materials, with both scientific interest and application potential, offer one more dimension than isotropic 2D materials to tune their physical properties. Various physical properties of 2D multi-layer materials are modulated by varying their stacking orders owing to significant interlayer vdW coupling. Multilayer rhenium disulfide (ReS2), a representative anisotropic 2D material, was expected to be randomly stacked and lack interlayer coupling. Here, we demonstrate two stable stacking orders, namely isotropic-like (IS) and

  18. Can f(T) gravity theories mimic ΛCDM cosmic history

    Energy Technology Data Exchange (ETDEWEB)

    Setare, M.R.; Mohammadipour, N., E-mail: rezakord@ipm.ir, E-mail: N.Mohammadipour@uok.ac.ir [Department of Science, University of Kurdistan, Sanandaj (Iran, Islamic Republic of)

    2013-01-01

    Recently the teleparallel Lagrangian density described by the torsion scalar T has been extended to a function of T. The f(T) modified teleparallel gravity has been proposed as the natural gravitational alternative for dark energy to explain the late time acceleration of the universe. In order to reconstruct the function f(T) by demanding a background ΛCDM cosmology we assume that, (i) the background cosmic history provided by the flat ΛCDM (the radiation ere with ω{sub eff} = (1/3), matter and de Sitter eras with ω{sub eff} = 0 and ω{sub eff} = −1, respectively) (ii) the radiation dominate in the radiation era with Ω{sub 0r} = 1 and the matter dominate during the matter phases when Ω{sub 0m} = 1. We find the cosmological dynamical system which can obey the ΛCDM cosmic history. In each era, we find a critical lines that, the radiation dominated and the matter dominated are one points of them in the radiation and matter phases, respectively. Also, we drive the cosmologically viability condition for these models. We investigate the stability condition with respect to the homogeneous scalar perturbations in each era and we obtain the stability conditions for the fixed points in each eras. Finally, we reconstruct the function f(T) which mimics cosmic expansion history.

  19. Molecular orientation in aligned electrospun polyimide nanofibers by polarized FT-IR spectroscopy.

    Science.gov (United States)

    Yang, Haoqi; Jiang, Shaohua; Fang, Hong; Hu, Xiaowu; Duan, Gaigai; Hou, Haoqing

    2018-07-05

    Quantitative explanation on the improved mechanical properties of aligned electrospun polyimide (PI) nanofibers as the increased imidization temperatures is highly required. In this work, polarized FT-IR spectroscopy is applied to solve this problem. Based on the polarized FT-IR spectroscopy and the molecular model in the fibers, the length of the repeat unit of PI molecule, the angle between the fiber axis and the symmetric stretching direction of carbonyl group on the imide ring, and the angle between the PI molecular axis and fiber axis are all investigated. The Mark-Howink equation is used to calculate the number-average molar mass of PI molecules. The orientation states of PI molecules in the electrospun nanofibers are studied from the number-average molar mass of PI molecules and the average fiber diameter. Quantitative analysis of the orientation factor of PI molecules in the electrospun nanofibers is performed by polarized FT-IR spectroscopy. Copyright © 2018 Elsevier B.V. All rights reserved.

  20. Concepts for the assay of unbound thyroxine (FT4) and thyroxine binding globulin (TBG)

    International Nuclear Information System (INIS)

    Odstrchel, G.; Hertl, W.; Ward, F.B.; Travis, K.; Lindner, R.E.; Mason, R.D.

    1977-01-01

    Two new concepts for the assay of thyroid related substances are presented. One assay (FT 4 ) is based on a kinetic measurement of T 4 as it desorbs from binder proteins onto solid-phase T 4 antibody. This reaction can be described by a second order rate equation; r = k (IMA) (FT 4 ). The assay is rapid (2 hours) and gives good agreement (sigma = 0.92) with equilibrium dialysis and a normal range of 0.9 - 2.3 ng/dl. This assay uses a small sample size (25 μl) and is unaffected by drugs such as aspirin and dilantin. Pregnant and estrogen treated women gave normal FT 4 values. A new method for the measurement of functionally active TEG is also presented. In this case the labeled T 4 is partitioned between bovine serum albumin and the patient's samples. The complex is then removed from solution by solid-phase anti-TBG. A curve remiscent of an immunoradiometric assay is obtained. The assay has a sensitivity of 4 μg/ml and is unaffected by aspirin, dilantin or the patient's T 4 concentrations. Correlation with 'rocket' electrophoresis is 0.90. The normal range was 20 +- 7 μg/ml with pregnant women giving values greater than 30 μg/ml. Five hereditary deficient patients gave a value equivalent to zero TBG concentration. (orig.) [de

  1. Hand dryer noise in public restrooms exceeds 80 dBA at 10 ft (3 m

    Directory of Open Access Journals (Sweden)

    Shari Salzhauer Berkowitz

    2015-01-01

    Full Text Available High airflow hand dryers are found in many public restrooms today. These dryers offer quick and clean hand drying, and are seen as being an environment-friendly alternative to paper towels. However, many new hand dryers are loud, exposing individuals using the facilities as well as those employees who clean the facilities to potentially dangerous noise. Prolonged exposure to high levels of occupational noise can cause damage to hair cells in the cochlea, resulting in varying degrees of noise-induced hearing loss. This study examined the intensity (in dBA of the noise produced by the air dryers in campus restrooms. Hand dryer peak and average noise was measured with a sound level meter at 2.5 ft, 5 ft, and 10 ft from the dryer. Noise measurements did not decrease as predicted by the inverse-square law, probably because of the reverberative surfaces found in the restrooms. The small sample of hand dryers tested was mostly found to be producing more noise than the manufacturer claimed they would; indeed, none of the dryers would be safe for an 8-h workday exposure. While hand dryers do reduce paper trash, they pose as a different sort of hazard to our environment and population.

  2. High performance gamma-ray spectrometer for runaway electron studies on the FT-2 tokamak

    Energy Technology Data Exchange (ETDEWEB)

    Shevelev, A.E., E-mail: Shevelev@cycla.ioffe.ru [Ioffe Institute, Politekhnicheskaya 26, St. Petersburg 194021 (Russian Federation); Khilkevitch, E.M.; Lashkul, S.I.; Rozhdestvensky, V.V.; Altukhov, A.B.; Chugunov, I.N.; Doinikov, D.N.; Esipov, L.A.; Gin, D.B.; Iliasova, M.V.; Naidenov, V.O.; Nersesyan, N.S.; Polunovsky, I.A.; Sidorov, A.V. [Ioffe Institute, Politekhnicheskaya 26, St. Petersburg 194021 (Russian Federation); Kiptily, V.G. [CCFE, Culham Science Centre, Abingdon, Oxon X14 3DB (United Kingdom)

    2016-09-11

    A gamma-ray spectrometer based on LaBr{sub 3}(Ce) scintillator has been used for measurements of hard X-ray emission generated by runaway electrons in the FT-2 tokamak plasmas. Using of the fast LaBr{sub 3}(Ce) has allowed extending count rate range of the spectrometer by a factor of 10. A developed digital processing algorithm of the detector signal recorded with a digitizer sampling rate of 250 MHz has provided a pulse height analysis at count rates up to 10{sup 7} s{sup −1}. A spectrum deconvolution code DeGaSum has been applied for inferring the energy distribution of runaway electrons escaping from the plasma and interacting with materials of the FT-2 limiter in the vacuum chamber. The developed digital signal processing technique for LaBr{sub 3}(Ce) spectrometer has allowed studying the evolution of runaways energy distribution in the FT-2 plasma discharges with time resolution of 1–5 ms.

  3. Monitoring wine aging with Fourier transform infrared spectroscopy (FT-IR

    Directory of Open Access Journals (Sweden)

    Basalekou Marianthi

    2015-01-01

    Full Text Available Oak wood has commonly been used in wine aging but recently other wood types such as Acacia and Chestnut, have attracted the interest of the researchers due to their possible positive contribution to wine quality. However, only the use of oak and chestnut woods is approved by the International Enological Codex of the International Organisation of Vine and Wine. In this study Fourier Transform (FT-mid-infrared spectroscopy combined with Discriminant Analysis was used to differentiate wines aged in barrels made from French oak, American oak, Acacia and Chestnut and in tanks with oak chips, over a period of 12 months. Two red (Mandilaria, Kotsifali and two white (Vilana, Dafni native Greek grape varieties where used to produce four wines. The Fourier Transform Infrared (FT-IR spectra of the samples were recorded on a Zinc Selenide (ZnSe window after incubation at 40 °C for 30 min. A complete differentiation of the samples according to both the type of wood used and the contact time was achieved based on their FT-IR spectra.

  4. New observational constraints on f(T) cosmology from radio quasars

    Energy Technology Data Exchange (ETDEWEB)

    Qi, Jing-Zhao; Cao, Shuo; Zhu, Zong-Hong [Beijing Normal University, Department of Astronomy, Beijing (China); Biesiada, Marek; Zheng, Xiaogang [Beijing Normal University, Department of Astronomy, Beijing (China); University of Silesia, Department of Astrophysics and Cosmology, Institute of Physics, Katowice (Poland)

    2017-08-15

    Using a new recently compiled milliarcsecond compact radio data set of 120 intermediate-luminosity quasars in the redshift range 0.46 < z < 2.76, whose statistical linear sizes show negligible dependence on redshifts and intrinsic luminosity and thus represent standard rulers in cosmology, we constrain three viable and most popular f(T) gravity models, where T is the torsion scalar in teleparallel gravity. Our analysis reveals that constraining power of the quasars data (N = 120) is comparable to the Union2.1 SN Ia data (N = 580) for all three f(T) models. Together with other standard ruler probes such as cosmic microwave background and baryon acoustic oscillation distance measurements, the present value of the matter density parameter Ω{sub m} obtained by quasars is much larger than that derived from other observations. For one of the models considered (f{sub 1}CDM) a small but noticeable deviation from ΛCDM cosmology is present, while in the framework of f{sub 3}CDM the effective equation of state may cross the phantom divide line at lower redshifts. These results indicate that intermediate-luminosity quasars could provide an effective observational probe comparable to SN Ia at much higher redshifts, and f(T) gravity is a reasonable candidate for the modified gravity theory. (orig.)

  5. FY17 Accomplishments - Testing Facilities and Capabilities at SWiFT, SNL

    Energy Technology Data Exchange (ETDEWEB)

    Berg, Jonathan Charles [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2017-10-01

    The Scaled Wind Farm Technologies (SWiFT) facility operated by Sandia National Laboratories (SNL) has, in support of the Atmosphere to electrons (A2e) research program, acquired measurements of wind turbine wake dynamics under various atmospheric conditions and while interacting with a downstream wind turbine. SNL researchers, in collaboration with National Renewable Energy Laboratory (NREL) researchers, installed a customized LIDAR system created by the Technical University of Denmark (DTU) in one of the SWiFT wind turbines (Figure 1) and operated that turbine with intentional yaw-versus-winddirection misalignment to study the behavior of the turbine wake under numerous combinations of atmospheric conditions and turbine yaw offsets. The DTU-customized LIDAR provided detailed measurements of the wake’s shape and location at many distances downwind of the turbine (Figure 2). These measurements will benefit wind energy researchers looking to understand wind turbine wake behavior and improve modeling and simulation of wake dynamics, including the “wake steering” affect that is observed when turbine yaw offset is controlled. During the test campaign, two SWiFT wind turbines were operated at the same time to observe the influence of the turbines on each other as the wake of the upwind turbine was observed sweeping over and interacting with the downwind turbine.

  6. Polymères en ambiance nucléaire comportement à long terme

    CERN Document Server

    Audouin, Ludmila; Fayolle, Bruno; Richaud, Emmanuel; Verdu, Jacques

    2012-01-01

    Ce livre présente des outils théoriques originaux, indispensables pour ta prédiction de la durée de vie des matériaux polymères en ambiance nucléaire. Le problème de vieillissement des polymères est avant tout un problème d'ingénieur, dont la préoccupation majeure est la prédiction de durée de vie selon des critères pertinents du point de vue de l'application. Partant de ce constat, les auteurs ont focalisé leur intérêt sur les aspects les plus souvent négligés dans les ouvrages classiques mais cruciaux : la modélisation cinétique de l'oxydation radio-amorcée à faible débit de dose et les conséquences de l'irradiation sur les propriétés thermomécaniques. Ces deux aspects font l'objet de développements qui confèrent à l'ouvrage son originalité, lui permettant d'être un complément utile aux ouvrages classiques. Présenté de manière claire et pédagogique, cet ouvrage permettra à l'étudiant de Master, au jeune chercheur comme à l'ingénieur de rejoindre un courant de reche...

  7. Characterization of prepared In2O3 thin films: The FT-IR, FT-Raman, UV-Visible investigation and optical analysis.

    Science.gov (United States)

    Panneerdoss, I Joseph; Jeyakumar, S Johnson; Ramalingam, S; Jothibas, M

    2015-08-05

    In this original work, the Indium oxide (In2O3) thin film is deposited cleanly on microscope glass substrate at different temperatures by spray pyrolysis technique. The physical properties of the films are characterized by XRD, SEM, AFM and AFM measurements. The spectroscopic investigation has been carried out on the results of FT-IR, FT-Raman and UV-Visible. XRD analysis exposed that the structural transformation of films from stoichiometric to non-stoichiometric orientation of the plane vice versa and also found that, the film is polycrystalline in nature having cubic crystal structure with a preferred grain orientation along (222) plane. SEM and AFM studies revealed that, the film with 0.1M at 500°C has spherical grains with uniform dimension. The complete vibrational analysis has been carried out and the optimized parameters are calculated using HF and DFT (CAM-B3LYP, B3LYP and B3PW91) methods with 3-21G(d,p) basis set. Furthermore, NMR chemical shifts are calculated by using the gauge independent atomic orbital (GIAO) technique. The molecular electronic properties; absorption wavelengths, excitation energy, dipole moment and frontier molecular orbital energies, molecular electrostatic potential energy (MEP) analysis and Polarizability first order hyperpolarizability calculations are performed by time dependent DFT (TD-DFT) approach. The energy excitation on electronic structure is investigated and the assignment of the absorption bands in the electronic spectra of steady compound is discussed. The calculated HOMO and LUMO energies showed the enhancement of energy gap by the addition of substitutions with the base molecule. The thermodynamic properties (heat capacity, entropy, and enthalpy) at different temperatures are calculated and interpreted in gas phase. Crown Copyright © 2015. Published by Elsevier B.V. All rights reserved.

  8. FT-IR, FT-Raman, NMR studies and ab initio-HF, DFT-B3LYP vibrational analysis of 4-chloro-2-fluoroaniline.

    Science.gov (United States)

    Arivazhagan, M; Anitha Rexalin, D

    2012-10-01

    The Fourier transform infrared (FT-IR) and Fourier transform Raman (FT-Raman) spectra of 4-chloro-2-fluoroaniline (CFA) have been recorded and analyzed. The equilibrium geometry, bonding features and harmonic vibrational frequencies have been investigated with the help of ab initio and density functional theory (DFT) methods. The assignments of the vibrational spectra have been carried out with the help of normal coordinate analysis (NCA) following the scaled quantum mechanical force field methodology. The (1)H and (13)C nuclear magnetic resonance (NMR) chemical shifts of the molecule are calculated by the Gauge including atomic orbital (GIAO) method. The first order hyperpolarizability (β(0)) of this novel molecular system and related properties (β, α(0) and Δα) of CFA are calculated using B3LYP/6-311++G(d,p) and HF/6-311++G(d,p) methods on the finite-field approach. The calculated results also show that the CFA molecule might have microscopic nonlinear optical (NLO) behavior with non-zero values. Stability of the molecule arising from hyper conjugative interactions, charge delocalization has been analyzed using natural bond orbital (NBO) analysis. The result confirms the occurrence of intramolecular charge transfer (ICT) within the molecule. The HOMO-LUMO energies UV-vis spectral analysis and MEP are performed by B3LYP/6-311++G(d,p) approach. A detailed interpretation of the infrared and Raman spectra of CFA is also reported based on total energy distribution (TED). The difference between the observed and scaled wave number values of the most of the fundamentals is very small. Copyright © 2012 Elsevier B.V. All rights reserved.

  9. Spectroscopic [FT-IR and FT-Raman] and molecular modeling (MM) study of benzene sulfonamide molecule using quantum chemical calculations

    Science.gov (United States)

    Vinod, K. S.; Periandy, S.; Govindarajan, M.

    2016-07-01

    The spectroscopic and molecular modeling (MM) study includes, FT-IR, FT-Raman and 13C NMR and 1H NMR spectra of the Benzene sulfonamide were recorded for the analysis. The observed experimental and theoretical frequencies (IR and Raman) were assigned according to their distinctive region. The present study of this title molecule have been carried out by hybrid computational calculations of HF and DFT (B3LYP) methods with 6-311+G(d,p) and 6-311++G(d,p) basis sets and the corresponding results are tabulated. The structural modifications of the compound due to the substitutions of NH2 and SO2 were investigated. The minimum energy conformers of the compound were studied using conformational analysis. The alternations of the vibrational pattern of the base structure related to the substitutions were analyzed. The thermodynamic parameters (such as zero-point vibrational energy, thermal energy, specific heat capacity, rotational constants, entropy, and dipole moment) of Benzene sulfonamide have been calculated. The donor acceptor interactions of the compound and the corresponding UV transitions are found out using NBO analysis. The NMR spectra were simulated by using the gauge independent atomic orbital (GIAO) method with B3LYP methods and the 6-311++G(d,p) basis set and their spectra were simulated and the chemical shifts related to TMS were compared. A quantum computational study on the electronic and optical properties absorption wavelengths, excitation energy, dipole moment and frontier molecular orbital energies, were performed by HF and DFT methods. The energy gap of the present compound was calculated related to HOMO and LUMO energies which confirm the occurring of charge transformation between the base and ligand group. Besides frontier molecular orbitals (FMO), molecular electrostatic potential (MEP) was performed. The thermodynamic properties (heat capacity, entropy, and enthalpy) of the title compound at different temperatures were calculated in gas phase and

  10. The spectroscopic (FT-IR, FT-Raman, dispersive Raman and NMR) study of ethyl-6-chloronicotinate molecule by combined density functional theory.

    Science.gov (United States)

    Karabacak, Mehmet; Calisir, Zuhre; Kurt, Mustafa; Kose, Etem; Atac, Ahmet

    2016-01-15

    In this study, ethyl-6-chloronicotinate (E-6-ClN) molecule is recorded in the region 4000-400 cm(-1) and 3500-100 cm(-1) (FT-IR, FT-Raman and dispersive Raman, respectively) in the solid phase. ((1))H and ((13))C nuclear magnetic resonance (NMR) spectra are recorded in DMSO solution. The structural and spectroscopic data of the molecule are obtained for two possible isomers (S1 and S2) from DFT (B3LYP) with 6-311++G(d,p) basis set calculations. The geometry of the molecule is fully optimized, vibrational spectra are calculated and fundamental vibrations are assigned on the basis of the potential energy distribution (PED) of the vibrational modes. ((1))H and ((13))C NMR chemical shifts are calculated by using the gauge-invariant atomic orbital (GIAO) method. The electronic properties, such as excitation energies, oscillator strengths, wavelengths, HOMO and LUMO energies, are performed by time-dependent density functional theory (TD-DFT). Total and partial density of state and overlap population density of state diagrams analysis are presented for E-6-ClN molecule. Furthermore, frontier molecular orbitals (FMO), molecular electrostatic potential, and thermodynamic features are performed. In addition to these, reduced density gradient of the molecule is performed and discussed. As a conclusion, the calculated results are compared with the experimental spectra of the title compound. The results of the calculations are applied to simulate the vibrational spectra of the molecule, which show excellent agreement with the observed ones. The theoretical and tentative results will give us a detailed description of the structural and physicochemical properties of the molecule. Natural bond orbital analysis is done to have more information stability of the molecule arising from charge delocalization, and to reveal the information regarding charge transfer within the molecules. Copyright © 2015 Elsevier B.V. All rights reserved.

  11. FT-IR, FT-Raman, UV-visible, and NMR spectroscopy and vibrational properties of the labdane-type diterpene 13-epi-sclareol.

    Science.gov (United States)

    Chain, Fernando E; Leyton, Patricio; Paipa, Carolina; Fortuna, Mario; Brandán, Silvia A

    2015-03-05

    In this work, FT-IR, FT-Raman, UV-Visible and NMR spectroscopies and density functional theory (DFT) calculations were employed to study the structural and vibrational properties of the labdane-type diterpene 13-epi-sclareol using the hybrid B3LYP method together with the 6-31G(∗) basis set. Three stable structures with minimum energy found on the potential energy curves (PES) were optimized, and the corresponding molecular electrostatic potentials, atomic charges, bond orders, stabilization energies and topological properties were computed at the same approximation level. The complete assignment of the bands observed in the vibrational spectrum of 13-epi-sclareol was performed taking into account the internal symmetry coordinates for the three structures using the scaled quantum mechanical force field (SQMFF) methodology at the same level of theory. In addition, the force constants were calculated and compared with those reported in the literature for similar compounds. The predicted vibrational spectrum and the calculated (1)H NMR and (13)C NMR chemical shifts are in good agreement with the corresponding experimental results. The theoretical UV-Vis spectra for the most stable structure of 13-epi-sclareol demonstrate a better correlation with the corresponding experimental spectrum. The study of the three conformers by means of the theory of atoms in molecules (AIM) revealed different H bond interactions and a strong dependence of the interactions on the distance between the involved atoms. Furthermore, the natural bond orbital (NBO) calculations showed the characteristics of the electronic delocalization for the two six-membered rings with chair conformations. Copyright © 2014 Elsevier B.V. All rights reserved.

  12. Spectroscopic [FT-IR and FT-Raman] and theoretical [UV-Visible and NMR] analysis on α-Methylstyrene by DFT calculations.

    Science.gov (United States)

    Karthikeyan, N; Joseph Prince, J; Ramalingam, S; Periandy, S

    2015-05-15

    In the present research work, the FT-IR, FT-Raman and (13)C and (1)H NMR spectra of the α-Methylstyrene were recorded. The observed fundamental frequencies in finger print as well as functional group regions were assigned according to their uniqueness region. The Gaussian computational calculations are carried out by HF and DFT (B3LYP and B3PW91) methods with 6-31++G(d,p) and 6-311++G(d,p) basis sets and the corresponding results were tabulated. The impact of the presence of vinyl group in phenyl structure of the compound is investigated. The modified vibrational pattern of the molecule associated vinyl group was analyzed. Moreover, (13)C NMR and (1)H NMR were calculated by using the gauge independent atomic orbital (GIAO) method with B3LYP methods and the 6-311++G(d,p) basis set and their spectra were simulated and the chemical shifts linked to TMS were compared. A study on the electronic and optical properties; absorption wavelengths, excitation energy, dipole moment and frontier molecular orbital energies were carried out. The kubo gap of the present compound was calculated related to HOMO and LUMO energies which confirm the occurring of charge transformation between the base and ligand. Besides frontier molecular orbitals (FMO), molecular electrostatic potential (MEP) was performed. The NLO properties related to Polarizability and hyperpolarizability based on the finite-field approach were also discussed. Crown Copyright © 2015. Published by Elsevier B.V. All rights reserved.

  13. Molecular structure, electronic properties, NLO, NBO analysis and spectroscopic characterization of Gabapentin with experimental (FT-IR and FT-Raman) techniques and quantum chemical calculations

    Science.gov (United States)

    Sinha, Leena; Karabacak, Mehmet; Narayan, V.; Cinar, Mehmet; Prasad, Onkar

    2013-05-01

    Gabapentin (GP), structurally related to the neurotransmitter GABA (gamma-aminobutyric acid), mimics the activity of GABA and is also widely used in neurology for the treatment of peripheral neuropathic pain. It exists in zwitterionic form in solid state. The present communication deals with the quantum chemical calculations of energies, geometrical structure and vibrational wavenumbers of GP using density functional (DFT/B3LYP) method with 6-311++G(d,p) basis set. In view of the fact that amino acids exist as zwitterions as well as in the neutral form depending on the environment (solvent, pH, etc.), molecular properties of both the zwitterionic and neutral form of GP have been analyzed. The fundamental vibrational wavenumbers as well as their intensities were calculated and compared with experimental FT-IR and FT-Raman spectra. The fundamental assignments were done on the basis of the total energy distribution (TED) of the vibrational modes, calculated with scaled quantum mechanical (SQM) method. The electric dipole moment, polarizability and the first hyperpolarizability values of the GP have been calculated at the same level of theory and basis set. The nonlinear optical (NLO) behavior of zwitterionic and neutral form has been compared. Stability of the molecule arising from hyper-conjugative interactions and charge delocalization has been analyzed using natural bond orbital analysis. Ultraviolet-visible (UV-Vis) spectrum of the title molecule has also been calculated using TD-DFT method. The thermodynamic properties of both the zwitterionic and neutral form of GP at different temperatures have been calculated.

  14. Rahvaliitlaste rahalaevad roostetavad kai ääres / Sten-Aleks Pihlak

    Index Scriptorium Estoniae

    Pihlak, Sten-Aleks

    2007-01-01

    Rahvaliidule lähedal seisvad ärimehed müüsid riigile maha vanu kalalaevu, et neid õppelaevadena kasutada, kuid nüüd roostetavad laevad kai ääres. Vt. samas: Lobby ekstraklass - minister tegi kõik, mis soovitud; Kalurite liit on tänaseks laiali jooksnud; Undrest jr võitles toetuse välja kohtus; Üheksast õppelaevaks muudetud alusest õpitakse päriselt vaid mõnel. Küsimustele vastab endine põllumajandusminister Ester Tuiksoo. Kommenteerivad Toivo Orgussaar ja Jüri Lember

  15. Des compagnes, des épouses, des mères

    OpenAIRE

    Robert-Guiard, Claudine

    2017-01-01

    Compagnes, épouses et mères sont pour les femmes les rôles attendus par les hommes, voire par elles-mêmes et aussi par les États. Quand il s’agit de peupler un territoire, un gouvernement a besoin, encore plus impérativement qu’en situation normale, que les femmes remplissent au mieux ces fonctions qui leur sont traditionnellement, et génétiquement pour la maternité, dévolues. Dans ces rôles les femmes sont pratiquement indissociables de leurs enfants et de leur compagnon ou mari. Étudier les...

  16. HiRes camera and LIDAR ranging system for the Clementine mission

    Energy Technology Data Exchange (ETDEWEB)

    Ledebuhr, A.G.; Kordas, J.F.; Lewis, I.T. [and others

    1995-04-01

    Lawrence Livermore National Laboratory developed a space-qualified High Resolution (HiRes) imaging LIDAR (Light Detection And Ranging) system for use on the DoD Clementine mission. The Clementine mission provided more than 1.7 million images of the moon, earth, and stars, including the first ever complete systematic surface mapping of the moon from the ultra-violet to near-infrared spectral regions. This article describes the Clementine HiRes/LIDAR system, discusses design goals and preliminary estimates of on-orbit performance, and summarizes lessons learned in building and using the sensor. The LIDAR receiver system consists of a High Resolution (HiRes) imaging channel which incorporates an intensified multi-spectral visible camera combined with a Laser ranging channel which uses an avalanche photo-diode for laser pulse detection and timing. The receiver was bore sighted to a light-weight McDonnell-Douglas diode-pumped ND:YAG laser transmitter that emmitted 1.06 {micro}m wavelength pulses of 200 mJ/pulse and 10 ns pulse-width, The LIDAR receiver uses a common F/9.5 Cassegrain telescope assembly. The optical path of the telescope is split using a color-separating beamsplitter. The imaging channel incorporates a filter wheel assembly which spectrally selects the light which is imaged onto a custom 12 mm gated image intensifier fiber-optically-coupled into a 384 x 276 pixel frame transfer CCD FPA. The image intensifier was spectrally sensitive over the 0.4 to 0.8 {micro}m wavelength region. The six-position filter wheel contained 4 narrow spectral filters, one broadband and one blocking filter. At periselene (400 km) the HiRes/LIDAR imaged a 2.8 km swath width at 20-meter resolution. The LIDAR function detected differential signal return with a 40-meter range accuracy, with a maximum range capability of 640 km, limited by the bit counter in the range return counting clock.

  17. Oil Companies and Reserves | Compagnies et réserves pétrolières

    Directory of Open Access Journals (Sweden)

    2012-05-01

    Full Text Available Top 20 World Oil CorporationsTop 20 des compagnies pétrolières mondialesSources: OPEC, Annual Statistical Bulletin, 2009; 2009 official reports of oil companies; British Petroleum, BP Statistical Review of Word Energy, 2010.Crude Oil Exports per Area (in Million Tonnes, 2009Exportations de pétrole brut par région (en millions de tonnes, 2009Sources : www.iea.org; www.opec.org; www.gecforum.org; British Petroleum, BP Statistical Review of World Energy, 2010.China’s Crude Oil Imports from Afr...

  18. rendre les villes urbaines sûres et inclusives au Venezuela

    International Development Research Centre (IDRC) Digital Library (Canada)

    ont étudié ces institutions et leur lien avec le taux de criminalité et la cohésion sociale dans quatre villes : Caracas, Ciudad Guayana, San Cristóbal et San Antonio del Táchira. Leur objectif était de trouver des solutions favorisant la sécurité et l'inclusivité dans ces villes. Histoire à succès | Villes sûres et inclusiVes. FLiC kr.

  19. Technical and economic analysis of the European electricity system with 60% RES

    International Nuclear Information System (INIS)

    Burtin, Alain; Silva, Vera

    2015-01-01

    This document examines the impacts of the integration of a large share of variable renewable generation into the generation mix of the European interconnected electricity system. The analysis, which is based on the results of long term studies performed by EDF R and D, aims at improving the current understanding of the technical and economic feasibility of a massive deployment of wind and PV across the European system. The document addresses several aspects of the system integration of variable generation in particular, including the characterization of variable RES generation, the need for generation and interconnection infrastructure, the impacts on short-term system operation and market profitability. (authors)

  20. Bilan des flux de matières particulaires et dissoutes du Sassandra à ...

    African Journals Online (AJOL)

    Ce travail a pour objectif l'estimation des apports du fleuve Sassandra. C'est dans ce cadre que les flux de matières particulaires et dissoutes ont été mesurés au cours de l'année 2003 sur le fleuve Sassandra, à la station hydrométrique de Gaoulou. La méthodologie adoptée a consisté à déterminer d'abord les ...